Develop Bugs

Let me get this straight - So TP2 is not a true "world phone"?

I'm a little green when it comes to 3G stuff, but please correct me if I am wrong...
Yes, you can put foreign SIM cards in US TP2's but not get 3G coverage in Europe. On the other hand from what I have read, European TP2's (even the unbranded ones) will not work with 3G is the US.
And if I am wrong... can someone please point me to a TP2 that will work on 3G networks in most of the world?
Or does one have to have two TP2's to enjoy 3G.. one for the US, and one for Europe, etc.?

quid246 said:
I'm a little green when it comes to 3G stuff, but please correct me if I am wrong...
Yes, you can put foreign SIM cards in US TP2's but not get 3G coverage in Europe. On the other hand from what I have read, European TP2's (even the unbranded ones) will not work with 3G is the US.
And if I am wrong... can someone please point me to a TP2 that will work on 3G networks in most of the world?
Or does one have to have two TP2's to enjoy 3G.. one for the US, and one for Europe, etc.?
Click to expand...
Click to collapse
Where have you heard that a NA TP2 won't work with 3G in EU?
The only limitation I'm aware of is a NA TP2 won't work w/ NA GSM 3G.

Oh SoS said:
Where have you heard that a NA TP2 won't work with 3G in EU?
The only limitation I'm aware of is a NA TP2 won't work w/ NA GSM 3G.
Click to expand...
Click to collapse
Until someone hacks it

I can't remember where I read it. But someone said if you wanted 3G in Europe, better to get a Euro unbranded model.
So perhaps this is under the assumption that it isn't hacked... not sure.
Slightly, off-topic Q but rather than start a new thread.... once a HardSPL is out for both the CDMA and GSM TP2's... will they effectively be "equal" devoces?
I really would like to pick-up a TP2 in the next few days... I like the VZ unit, but it's CDMA and since I travel quite a bit, really prefer and need more of a GSM phone, but don't like the TMO as no 3.5mm jack.

quid246 said:
I can't remember where I read it. But someone said if you wanted 3G in Europe, better to get a Euro unbranded model.
So perhaps this is under the assumption that it isn't hacked... not sure.
Slightly, off-topic Q but rather than start a new thread.... once a HardSPL is out for both the CDMA and GSM TP2's... will they effectively be "equal" devoces?
I really would like to pick-up a TP2 in the next few days... I like the VZ unit, but it's CDMA and since I travel quite a bit, really prefer and need more of a GSM phone, but don't like the TMO as no 3.5mm jack.
Click to expand...
Click to collapse
The Verizon unit already has international GSM bands unlocked, AND international (2100MHz 3G). If you've been a Verizon customer for 60 days or more you can call them up and get an unlock code for free and use any SIM card in your phone so you can get a cheap prepaid SIM and not pay the high Verizon roaming costs. There's also a small (I'd say around 25%) chance that the NA 3G bands will be found/unlocked, but at this point who really knows if they are there or not.

Actually the Telus CDMA TP2 supports the European 3G bands but not the American ones becuase technically you will be using it in North America on CDMA and outside America on GSM. So its the other way around

It seems that if you have the Sprint TP2 that it won't register at all on US GSM networks, but comes unlocked by default.
On Verizon (which I have) a simple phone call to support they'll give you the unlock code and you're good to go. I use an Orange (UK) Sim in mine just fine in the US and others in other forums have reported that using US SIM's from TMobile/AT&T work fine also in the US.
--chris

TP2 = best 'World' phone I've ever owned.
quid246 said:
I'm a little green when it comes to 3G stuff, but please correct me if I am wrong...
Yes, you can put foreign SIM cards in US TP2's but not get 3G coverage in Europe. On the other hand from what I have read, European TP2's (even the unbranded ones) will not work with 3G is the US.
And if I am wrong... can someone please point me to a TP2 that will work on 3G networks in most of the world?
Or does one have to have two TP2's to enjoy 3G.. one for the US, and one for Europe, etc.?
Click to expand...
Click to collapse
I have an unbranded HTC factory TP2, and it works in 3G mode anywhere I take it that has the 3G network... and I travel all over the US/Caribbean and back to EU/UK. Have not found one spot it hasn't worked (inlcduing some of the very obscure Carib countries), and I like the fact that it automatically picks up HS when within range without having to change any settings.
Just have to make sure that your provider gives you a 3G SIM (most of them are these days) and that you have the 3G service enabled on your account in the respective country.
Many people say they can't pick it up yet don't have it on their account, or think that their EU provider will automatically provide it as part of the roaming service... which is not a good assumption to make.

TyTanIc said:
I have an unbranded HTC factory TP2, and it works in 3G mode anywhere I take it that has the 3G network... and I travel all over the US/Caribbean and back to EU/UK. Have not found one spot it hasn't worked (inlcduing some of the very obscure Carib countries), and I like the fact that it automatically picks up HS when within range without having to change any settings.
.
Click to expand...
Click to collapse
3G in North America? I doubt that. The phone does not support North American 3G bands. Are you sure it was 3G in North America??

Man, this is all confusing... I swear somebody has to come up with an HTML table of what phones work with what and where and stickify it.

Can people just put this to bed already!!!
The Sprint (North America) TP2 is suppossed to be used on CDMA in the US and GSM worldwide, hence the GSM radio is unlocked for outside America GSM use. This is how it comes default. If that is so hard to grasp, then there is no hope for some, sadly.
As for the title, the TP2 is a world phone, it works in the US (and North Ameria) on CDMA and elsewhere unlocked on GSM. That to me is the true definition of a World phone from a U.S CDMA perspective (and especially moreso as this is the CDMA version).
To put it in perspective, a Sprint customer (in this case, moi) gets the best of CDMA in the U.S and when traveling to visit his sister in High Wycombe in the U.K (like i'll be doing this Autumm) gets to pop in a PAYG U.K sim in the same phone and use it while over there. This phone doesn't get any "worldlier" to me than this scenario!!
Is the O.P attempting to specifically define a dual mode CDMA/GSM-unlocked World phone as not world phone because it's locked by default from doing GSM in it's primary market which happens to be CDMA (and in this case Sprint)?
This is not rocket science folks, it really isn't.

LordLugard said:
Is the O.P attempting to specifically define a dual mode CDMA/GSM-unlocked World phone as not world phone because it's locked by default from doing GSM in it's primary market which happens to be CDMA (and in this case Sprint)?
Click to expand...
Click to collapse
Point taken. It's just that with that same Sprint phone (correct me if I am wrong), you can't travel to Canada pop in a Rogers SIM card and get Rogers 3G.
Wouldn't the phone want to swing towards it's CDMA cousin, Telus or Bell?

mmmhhh86 said:
3G in North America? I doubt that. The phone does not support North American 3G bands. Are you sure it was 3G in North America??
Click to expand...
Click to collapse
AT&T 3G runs on 850/1900 GSM, the TP2 supports both of those bands, how would it not work with 3G on AT&T in the US?
T-Mobile runs 3G on 1700/2100 GSM bands, both of which aren't included on the TP2, as far as my research has lead me to believe.

Basically while it may be a quad band GSM phone, it is only a dual band 3G device. It comes in two flavours - UMTS 900+2100 or UMTS 1900+850
The 900/2100 version is far more common than 850/1900

.mak said:
AT&T 3G runs on 850/1900 GSM, the TP2 supports both of those bands, how would it not work with 3G on AT&T in the US?
T-Mobile runs 3G on 1700/2100 GSM bands, both of which aren't included on the TP2, as far as my research has lead me to believe.
Click to expand...
Click to collapse
It supports those bands for HSDPA CDMA not GSM 3G
Network 3G EVDO Rev A (800/1900 MHz), UMTS/HSPA (2100 MHz), GSM/ EDGE (850/900/1800/1900 MHz)
This is the Telus version btw

quid246 said:
Point taken. It's just that with that same Sprint phone (correct me if I am wrong), you can't travel to Canada pop in a Rogers SIM card and get Rogers 3G.
Wouldn't the phone want to swing towards it's CDMA cousin, Telus or Bell?
Click to expand...
Click to collapse
"it Depends"
The US CDMA phone operates in 3 modes.
1 CDMA Only
2 GSM Only
3 'Global' (whatever it can find).
If you have it in Global it will generally take the CDMA local carrier over anything else. However, not always. I've had mine switch to GSM for a bit then go back to CDMA. But mine is Verizon and unlocked so it works everywhere in the US and I also have a UK sim card in it. So I'm a little 'different'.
But, in any case, you can tell the phone which mode to use if you want. All upto you.
--chris
(verizon TP2)

here we go again... (tp2 3g na)
"I have an unbranded HTC factory TP2, and it works in 3G mode anywhere I take it that has the 3G network... and I travel all over the US/Caribbean and back to EU/UK. Have not found one spot it hasn't worked (inlcduing some of the very obscure Carib countries), and I like the fact that it automatically picks up HS when within range without having to change any settings."
So, maybe he's wrong. But either way...
You wanna know why this keeps coming up again and again?
(not because we're all dumb and thick headed, which we may very well be)
But,
Because we just have trouble imagining them hardware "band amplifier" hobbling the hardware when it's so much easier to do it somewhere in firmware.
We all know that the less you fiddle with the hardware for multi-region functionality the less you have to fiddle with the production line and fiddling with the production line is the Last Thing a manufacturer wants to do.
Someone even once said that there wasn't room in the Rhodium platform for quad band data support. But now we're expecting the tilt 2 to do just that.
So, all protestations aside, those of us who paid ~700 us clams for this beauty, and who like the kbd layout.
And who have like me (as quite the Early Adopter), forked out for an sx56, sx66, 8135, x7510((quad band data)
Just feel a leetle wee bit of a sense, dare I say it, of Entitlement for the TP2 to be enabled into a fully world wide phone.
So we keep hunting, and digging, and dreaming, and .... posting.....

well here is my two cents i have the original unlocked euro version of the tp2 and all i get in the us it edge. it is really impossible to get 3g in the US (2100) because this version of the phone literally does not have the attena for it. and so that you can see all the different types of tp2s and the technical and physical differences between them here is a link: http://pdadb.net/index.php?m=pdacom...&id3=1792&id4=1829&id5=1766&id6=1989&id7=1751

drae1980 said:
well here is my two cents i have the original unlocked euro version of the tp2 and all i get in the us it edge. it is really impossible to get 3g in the US (2100) because this version of the phone literally does not have the attena for it. and so that you can see all the different types of tp2s and the technical and physical differences between them here is a link: http://pdadb.net/index.php?m=pdacom...&id3=1792&id4=1829&id5=1766&id6=1989&id7=1751
Click to expand...
Click to collapse
3g in the USA must be on the 1700 band then, as thats the only gsm band that the euro version doesn't support.
Euro version
GSM850, GSM900, GSM1800, GSM1900, UMTS900, UMTS2100
TMOUS version
GSM850, GSM900, GSM1800, GSM1900, UMTS1700, UMTS2100

Anyone know of a good site to order a prepaid SIM card? I plan on using my VZW TP2 in Spain and France. I was also wondering if I should or could disable data and use my TP2 with Garmin XT so I don't get nailed for data usage. Your thoughts would be appreciated...
Mugs

Samsung Galaxy Nexus Variants?

Hi friends, these days buy a samsung nexus I9250 galaxy, but I wanted something:
1. few versions of the galaxy samsung nexus there?
2. There is a version that supports GSM networks lte? which is?
3. i9250 model supports HSPA + 21?
4. i9250 model that handles frequencies in HSPA +?

There are 2 versions.
1) CDMA/LTE on Verizon Wireless USA only. Model i515
2) GSM/HSPA+ (21mbps radio). Pentaband (works on any GSM carrier). Model i9250
And that's it! There are no GSM/LTE models.

i9250t provided by Telstra an Australian service provider.
Sent from my Galaxy Nexus using xda premium

zeekiz said:
i9250t provided by Telstra an Australian service provider.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
in what frecuency works the I9250t?

jamm513 said:
in what frecuency works the I9250t?
Click to expand...
Click to collapse
As I noted in my post... they all support the same frequencies. Its pentaband GSM it'll work on any GSM network in the world.
For your reference so you can stop asking: http://www.phonearena.com/phones/Samsung-GALAXY-Nexus_id5595

I'm not sure, take expansys for example:
USA:
Network: HSPA+ 21Mbps/HSUPA 5.76Mbps 850/900/1900/1700/2100 / Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz / (Band frequency, HSPA availability, and data speed are operator dependent)
UK:
Network: HSPA/WCDMA Europe/Asia: 900/2100 MHz / HSPA+ 21Mbps/HSUPA 5.76Mbps / Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz / (Band frequency, HSPA availability, and data speed are operator dependent)
*Also, on Samsung web SAR page, there:
GT-I9250 GT-I9250J GT-I9250M GT-I9250T
from here:
http://www.samsung.com/sar/sarMain?site_cd=&prd_mdl_name=9250&selNatCd=US&languageCode=EN
So maybe there 4 different variant, also there a SC-04D for Japan,
SHW-M420S and M420K for Korea.
somebody have to check it , also the nexus S have plenty of variants, so I see nothing new here, but just go for standard GT-I9250 as it's pentaband 3G that will work in any country , BTW I dunno if GT-I9250* go with other build thank "yakju", not that it will do anything with the frequencies as it's software, but if you think of it, with other devices there mostly 2 main variants, 1 for Europe, and 1 for Americas, sometime also for China, and other regions. Anyone can get more info about it?

E15i said:
I'm not sure, take expansys for example:
USA:
Network: HSPA+ 21Mbps/HSUPA 5.76Mbps 850/900/1900/1700/2100 / Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz / (Band frequency, HSPA availability, and data speed are operator dependent)
UK:
Network: HSPA/WCDMA Europe/Asia: 900/2100 MHz / HSPA+ 21Mbps/HSUPA 5.76Mbps / Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz / (Band frequency, HSPA availability, and data speed are operator dependent)
*Also, on Samsung web SAR page, there:
GT-I9250 GT-I9250J GT-I9250M GT-I9250T
from here:
http://www.samsung.com/sar/sarMain?site_cd=&prd_mdl_name=9250&selNatCd=US&languageCode=EN
So maybe there 4 different variant, also there a SC-04D for Japan,
SHW-M420S and M420K for Korea.
somebody have to check it , also the nexus S have plenty of variants, so I see nothing new here, but just go for standard GT-I9250 as it's pentaband 3G that will work in any country , BTW I dunno if GT-I9250* go with other build thank "yakju", not that it will do anything with the frequencies as it's software, but if you think of it, with other devices there mostly 2 main variants, 1 for Europe, and 1 for Americas, sometime also for China, and other regions. Anyone can get more info about it?
Click to expand...
Click to collapse
It doesn't matter what variation it is, a GSM phone will work on GSM networks and a LTE phone on all LTE networks. (unlocked, of course)
GSM and LTE have completely different frequencies so a GSM phone will not work on LTE networks and vice versa.
PS. HSDPA+ has nothing to do with the phone itself but if the network you are on provides you with it.

E15i said:
I'm not sure, take expansys for example:
USA:
Network: HSPA+ 21Mbps/HSUPA 5.76Mbps 850/900/1900/1700/2100 / Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz / (Band frequency, HSPA availability, and data speed are operator dependent)
UK:
Network: HSPA/WCDMA Europe/Asia: 900/2100 MHz / HSPA+ 21Mbps/HSUPA 5.76Mbps / Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz / (Band frequency, HSPA availability, and data speed are operator dependent)
*Also, on Samsung web SAR page, there:
GT-I9250 GT-I9250J GT-I9250M GT-I9250T
from here:
http://www.samsung.com/sar/sarMain?site_cd=&prd_mdl_name=9250&selNatCd=US&languageCode=EN
So maybe there 4 different variant, also there a SC-04D for Japan,
SHW-M420S and M420K for Korea.
Click to expand...
Click to collapse
Its all just semantics and slightly different radio software. They are all the same. You can use ANY i9250 model on ANY GSM carrier in the world. Read my first post it gives you all the information you need in practicality.
The i9250 is regularly for sale from dozens of resellers. Just buy one ffs.

What did you mean by Its all just semantics and slightly different radio software?
you mean it's possible to disable some of the frequencies with flashing different radio? from what I learned here, software have nothing to do with the frequencies that device supports, only hardware (antennas) matters here. also the other variants, are made for specific operators, so a normal i9520 wins, as you not depend on Samsung or the operator for OTA updates, also I'm not sure if let say J variant get OTA with "yakju".

E15i said:
What did you mean by Its all just semantics and slightly different radio software?
you mean it's possible to disable some of the frequencies with flashing different radio? from what I learned here, software have nothing to do with the frequencies that device supports, only hardware (antennas) matters here. also the other variants, are made for specific operators, so a normal i9520 wins, as you not depend on Samsung or the operator for OTA updates, also I'm not sure if let say J variant get OTA with "yakju".
Click to expand...
Click to collapse
Not hardware radio, software radio. The different variants (yakju** models) have slightly different radio software for the regions they're originally sold in. All i9250 models support the same GSM frequencies.
These models aren't necessarily made for specific carriers but specific regions. Any i9250 can be flashed to yakju with images from Google if you prefer. You will receive OTAs either way, but may receive them slightly faster if you choose to flash to yakju.
Long story short, you shouldn't care. Just buy the cheapest one you can get, because if it doesn't come with yakju out of the box, it takes about ~5minutes to flash it to yakju and be the exact same (and no this doesn't require root or anything, you just unlock your bootloader and flash images, then it is completely stock).
So just to drive it home again: ANY i9250 you buy will work on ANY carrier in the world. The hardware is the same, and the software may be slightly different, but 100% changeable to your liking. Just buy the phone.

Ok, and I guess, lock the bootloader after?
I also buy it soon, and I also want to use "yakju" build, but dont want to root or unlock bootloader, but there is no way to flash "yakju" without unlock the bootloader?

*sigh*
Jesus christ what happened to the experimental Nexus spirit?
Why on earth even get this phone if you are afraid of touching it?
It's a phone designed to be ****ed with and still be bootable with code hosted outside it if you **** it up completely. It's virtually impossible to break.
How on earth can you even consider buying this phone if your main intention is not using what is what made for?
If you don't want all that, just get a regular phone, made for regular people, where you get your updates, regularly, through some really ****ty 3rd party "value-addon" software. Which only runs on 2 versions of Windows. And slowly.
Or just get your yakju/non-yakju phone and get the updates when you do, which will still be before everyone else.
Really.
You are putting to much into this. Either you want a moddable phone, and this one is it, or you are not a modder, and you should get something else.

josteink said:
*sigh*
Jesus christ what happened to the experimental Nexus spirit?
Why on earth even get this phone if you are afraid of touching it?
It's a phone designed to be ****ed with and still be bootable with code hosted outside it if you **** it up completely. It's virtually impossible to break.
How on earth can you even consider buying this phone if your main intention is not using what is what made for?
If you don't want all that, just get a regular phone, made for regular people, where you get your updates, regularly, through some really ****ty 3rd party "value-addon" software. Which only runs on 2 versions of Windows. And slowly.
Or just get your yakju/non-yakju phone and get the updates when you do, which will still be before everyone else.
Really.
You are putting to much into this. Either you want a moddable phone, and this one is it, or you are not a modder, and you should get something else.
Click to expand...
Click to collapse
That's quite a pompous rant. Shame you're so embarrassingly off the mark. The Nexus is a dev phone, because it is important to have a smoothly running device with the latest operating system out there for manufacturers and app developers. It contributes to the viability of the Android ecosystem (#1 reason the Nexus is made for). Hence the rapid OTA system on an incremental version basis. But you're full blown ego-crazy if you think Google released a phone just for you - the 0.001% that wants to mod. This is a mass market phone now (#2 reason it is made for). Most consumers buy it exactly so they don't have to root and install custom roms to stay up to date without the inherent bleeding-edge bugs that goes along with hacking. All Android phones are moddable. Why the hell wouldn't you have bought something with better specs if you were just going to mod it? You did it wrong. Sorry to break it to you, but Google made the GN without your specific hobby in mind.

E15i said:
Ok, and I guess, lock the bootloader after?
I also buy it soon, and I also want to use "yakju" build, but dont want to root or unlock bootloader, but there is no way to flash "yakju" without unlock the bootloader?
Click to expand...
Click to collapse
You don't root. You do unlock the bootloader, but who cares! If you must have a locked bootloader, its just 1 extra command line entry to lock it again after you're done flashing to yakju.
Don't think you're understanding really. Unlocking the bootloader on a Nexus is not a big deal. It is literally 1 command line entry to unlock or lock. Like I said, flashing yakju takes literally 5 minutes.

I know that, but people here talking about the variants of it,
how can we be 100% sure, that for example M and J have the same hardware?
and only the radio software is different?!

E15i said:
I know that, but people here talking about the variants of it,
how can we be 100% sure, that for example M and J have the same hardware?
and only the radio software is different?!
Click to expand...
Click to collapse
You just know! Stop worrying FFS. I could hand you either one with flashed yakju firmware and you would never be able to tell the difference (even with regional software you wouldn't tell). No matter what, you'll get an i9250 that's what matters.

Hi im a passive reader i never register... but now i want to buy this phone and I cant find the answer..
I want to buy this product
amazon.de/Samsung-Smartphone-Touchscreen-Megapixel-titanium-silber/dp/B005Y5SE6I/ref=dp_return_1?ie=UTF8&n=562066&s=ce-de
But i dont know if this model: GT-I9250TSADBT is pentaband or not...
My 3G network is 850/1900
Ty for the answer and sorry for my noob question

Mapeed said:
Hi im a passive reader i never register... but now i want to buy this phone and I cant find the answer..
I want to buy this product
amazon.de/Samsung-Smartphone-Touchscreen-Megapixel-titanium-silber/dp/B005Y5SE6I/ref=dp_return_1?ie=UTF8&n=562066&s=ce-de
But i dont know if this model: GT-I9250TSADBT is pentaband or not...
My 3G network is 850/1900
Ty for the answer and sorry for my noob question
Click to expand...
Click to collapse
All GSM Galaxy Nexus devices are pentaband.

Mapeed said:
Hi im a passive reader i never register... but now i want to buy this phone and I cant find the answer..
I want to buy this product
amazon.de/Samsung-Smartphone-Touchscreen-Megapixel-titanium-silber/dp/B005Y5SE6I/ref=dp_return_1?ie=UTF8&n=562066&s=ce-de
But i dont know if this model: GT-I9250TSADBT is pentaband or not...
My 3G network is 850/1900
Ty for the answer and sorry for my noob question
Click to expand...
Click to collapse
Create a thread. No need to bump a thread from 3 months ago to ask an unrelated question.
Sent from the future.

SocialReject said:
Create a thread. No need to bump a thread from 3 months ago to ask an unrelated question.
Sent from the future.
Click to expand...
Click to collapse
If i do that u will tell me then that i have to use the search tool...
Ty for the answer

PLEASE HELP, Baseband, radio band PROBLEMS, low network, HOW TO CHANGE?

First of all, I live in Europe and have ZL 6502. Because of low network I entered *#*#4636#*#* and in Phone information tried to change the Radio Band but only available was US BAND. I ve tried flashing 4.1.2 - 10.1.A.1.434 - GLOBAL, and Generic LAM (b) Generic GEL 1271-5120 10.3.1.A.0.244 R5B version, but still shows only US radio band available. PLEASE HELP ME if there is ANY way how to get EURO BAND. Which firmware I should flash?
PS. My phone is not rooted, with locked bootloader, I will do it ONLY if its necessary.
Thanks

noob_syboot said:
First of all, I live in Europe and have ZL 6502. Because of low network I entered *#*#4636#*#* and in Phone information tried to change the Radio Band but only available was US BAND. I ve tried flashing 4.1.2 - 10.1.A.1.434 - GLOBAL, and Generic LAM (b) Generic GEL 1271-5120 10.3.1.A.0.244 R5B version, but still shows only US radio band available. PLEASE HELP ME if there is ANY way how to get EURO BAND. Which firmware I should flash?
PS. My phone is not rooted, with locked bootloader, I will do it ONLY if its necessary.
Thanks
Click to expand...
Click to collapse
Just reload the software using PC Companion from Sony, and DON'T select a band when you're done.

I did that too... So I got a suggestion on xda to do a full factory reset. It solved the problem.
Also, try to stay away frm such settings that u know nothing about( I once did that nd had a hard time). Tinkering with them causes a lot of headaches(a lot of backuping nd stuff)
Hope it helps.. Don't forget the thanks buton on ur left

I already did that, and the phone I mean network works more or less ok, but I was wondering if there is a way somehow to change the radio band. Because US Band works on diffrenet frequencies than EURO Band, and I think it would be more compatible wit my carrier.
Thank you both for the reply

noob_syboot said:
I already did that, and the phone I mean network works more or less ok, but I was wondering if there is a way somehow to change the radio band. Because US Band works on diffrenet frequencies than EURO Band, and I think it would be more compatible wit my carrier.
Thank you both for the reply
Click to expand...
Click to collapse
Budddy afaik, ucan switch to bands which r given in that settings menu only, meaning u can not set any other band which isnt listed.
Dont forget the thanks!

control freak said:
Budddy afaik, ucan switch to bands which r given in that settings menu only, meaning u can not set any other band which isnt listed.
Dont forget the thanks!
Click to expand...
Click to collapse
YES, I understand that, but I was asking IF there is a way to CHANGE the US Band only, via FLASHING or INSTALLING or MODIFYING firmware or something else, to have NEW RADIO BAND choices like Automatic or Euro Band, Japan Band etc..

noob_syboot said:
YES, I understand that, but I was asking IF there is a way to CHANGE the US Band only, via FLASHING or INSTALLING or MODIFYING firmware or something else, to have NEW RADIO BAND choices like Automatic or Euro Band, Japan Band etc..
Click to expand...
Click to collapse
No unfortunately there is no way that u can change bands other than provided.
I wud also suggest to ask this on another forum, bcuz u wont find many ppl here. U might wanna try Xperia Z forum or try searching on xda GENERAL.
thats the most i can help.
Good luck!

How low is your signal?
The countries of Europe use the dual band frequencies of 900-1800. The US uses mainly 850-1900.
But the Xperia ZL C6502 supports all of these:
C6502/L35H
UMTS HSPA+: 850 (Band V), 900 (Band VIII), 1700 (Band IV), 1900 (Band II), 2100 (Band I)
GSM GPRS/EDGE: 850, 900, 1800, 1900

Well the signal strength varies from time to time, I rarely get full network bars, usually is 2 or 3 bars. But I`ve noticed that in some places where using my HOX has full bars the ZL has one or no bars (by using the same sim card to be sure about the carrier and network strength). That is why I was wondering if there was a way to somehow change/add Radio Band on my Xperia ZL.
Please tell me when you try to change the radio band via *#*#4636#*#* does it show ONLY US Band or you might have more options to select? Please inform me, at least I want to know is it same to all Xperia ZL 6502 or just mine and those from US.
Thanks

noob_syboot said:
Well the signal strength varies from time to time, I rarely get full network bars, usually is 2 or 3 bars. But I`ve noticed that in some places where using my HOX has full bars the ZL has one or no bars (by using the same sim card to be sure about the carrier and network strength). That is why I was wondering if there was a way to somehow change/add Radio Band on my Xperia ZL.
Please tell me when you try to change the radio band via *#*#4636#*#* does it show ONLY US Band or you might have more options to select? Please inform me, at least I want to know is it same to all Xperia ZL 6502 or just mine and those from US.
Thanks
Click to expand...
Click to collapse
When going to *#*#4636#*#* and then phone information, it lists info for Data which is set to LTE in my case but nothing for Voice. You need to go to *#*#7378423#*#* >> Service Info >> Configuration to look at your Bands.
Mine are GSM850, GSM900, GSM1800, GSM1900. My phone is a C6506.
My signal indoors doesnt have full 5 bars either, it will be between 2-3 bars. Outside, ill have usually the maximum but sometimes 4. At my work I have 0 bars because of the building I work in but even with 0 bars my signal never drops. The bars are not perfect, they are just a representation of your signal more or less.
As long as your signal doesnt drop, I wouldnt worry too much about it unless you have real poor reception outdoors.
Sorry for the late reply

Mine bands are GSM850, 900, 1800, 1900 UMTS_BC1 BC2 BC4 BC5 BC8
What thoes this mean? I gont have compatible 3g bands for europian networks or something else?
Sorry for late reply
Sent from my HTC One X using xda app-developers app

noob_syboot said:
Mine bands are GSM850, 900, 1800, 1900 UMTS_BC1 BC2 BC4 BC5 BC8
What thoes this mean? I gont have compatible 3g bands for europian networks or something else?
Sorry for late reply
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
You shouldn't have any issues with your phone. Your C6502 supports the proper frequencies which include pretty much everything apart from LTE. Only C6503 and C6506 support LTE. I don't believe you can flash a baseband to obtain LTE since it is also related to the hardware.
If you really feel like the reception is an issue, I would bring the phone back to where you bought it and have them verify with another ZL if the same type of signal is acquired by the phone but honestly, I don't think you have a problem.
But you be the judge of that....
Good Luck!

I thought also that i have the proper bands on the phone, but that`s why its so strange when using *#*#4636#*#* in the Phone info when selecting the 3 dots Select radio band ONLY shows US Band, I should be able to have more choices.
This is why I`m asking if you have the same option, or are there ANY Xperia ZLs that have more selective options than US Band only.
Thanks

noob_syboot said:
I thought also that i have the proper bands on the phone, but that`s why its so strange when using *#*#4636#*#* in the Phone info when selecting the 3 dots Select radio band ONLY shows US Band, I should be able to have more choices.
This is why I`m asking if you have the same option, or are there ANY Xperia ZLs that have more selective options than US Band only.
Thanks
Click to expand...
Click to collapse
I checked in my phone the *#*#4636#*#* and I I only have USA Band which I assume is normal for me since I live in Canada. But this information is for data reception (3G, H+, LTE) not for making/receiving phone calls.
The best thing for you to do is to walk in a store that has this phone on display and verify that its configured like yours so you know there's nothing wrong with yours.

for come back at your frequency you need type the code *#*#7378423#*#* and select the voice like "reset all customization".
The phone reboot and restart to work!!
Sorry for my english

hi
to help you i have created this post on my blog
innovativeideasbyyogi.blogspot.in/2016/12/problem-4636-if-you-have-selected-radio.html

xgekox said:
for come back at your frequency you need type the code *#*#7378423#*#* and select the voice like "reset all customization".
The phone reboot and restart to work!!
Sorry for my english
Click to expand...
Click to collapse
That just does a total factory reset. Useless advice...

Sprint LG-LS980 that was unlocked for T-Mobile, but no LTE service

First off, I hope I am putting this in the proper section. The LG G2 I have is an original Sprint-branded device (LG-LS980), but it has been rooted/modded/flashed to be compatible with T-Mobile and I am hoping for some help with getting the phone to receive T-Mobile's LTE signal, so I wasn't sure what LG G2 section to post this in (Sprint's or T-Mobile's). If this is not the right place, please let me know where I should post it and I will be glad to move it to/re-post it in the appropriate section.
With that stated, I bought this phone from someone off of Craigslist two days ago. It was listed as an "Unlocked LG G2" and when I texted the guy and asked him what carrier the phone was for, he told me it was for T-Mobile; so I believed/assumed it was a T-Mobile LG G2 device that was also unlocked. When I met the guy in person, he was very friendly and gave me time to check out the phone myself and to test my T-Mobile SIM card in it. When I turned the phone on after inserting my SIM card to make a test call, the 'T-Mobile LTE' screen was shown during the startup process, which further led me to believe that it was, indeed, an actual T-Mobile LG G2. So, I bought the phone for $260. After I left and got to use the phone for a while, I noticed that there was no T-Mobile logo on the back of the phone, so I Googled the model number (LG-LS980) and realized that it was actually a Sprint device. After realizing this, I also noticed that the phone only displayed the '4G' logo on the front screen, which led me to believe that it was not picking up an LTE signal (I am not familiar with the LG G2, so I wasn't sure what symbol would be displayed). After logging in with my Google account and downloading/installing the SpeedTest.net app, I ran a few tests and it's definitely not getting LTE speeds; it even seems to be getting relatively-slow speeds for 4G/HSPA+ (around 6Mbps Up/2Mbps Down).
So, my question is this: Can this Sprint LG G2 properly receive an LTE signal with a T-Mobile SIM card? And if so, what do I need to do to make this happen?
For the record, the person who rooted/flashed/modded this phone seems to have done a good job in making it compatible with T-Mobile (for the most part). To my knowledge, everything other than picking up T-Mobile's LTE signal seems to be in excellent working order. The camera works nicely; even on 4G, opening webpages is still fast; the music player works; text and picture messaging work properly; and WiFi-calling is even showing up in the Settings as an option (which, to my knowledge, is exclusively a T-Mobile feature. The phone is even showing up as an LG-D801 in the device's Settings.
I also want to add that there is an icon for 'SuperSu Installer' with a message that reads, "Tap to install SuperSU and root your device," but I have been scared to even mess with this feature. I did click the SuperSU icon and a page opened that showed this: "SuperSu is not yet fully installed - your device is not fully rooted. To finish rooting, the SuperSU GUI needs to be installed. This can be done by instaling it through GooglePlay, or by downloading the flashable ZIP and installing it through TWRP." And there is some more to the message below that, but I did not want to take the time to type every word.
So, do I need to go through the process of "fully rooting" this phone in order to be able to properly receive an LTE signal with my T-Mobile SIM card? Or could I possibly damage the phone by trying that process without knowing what I'm actually doing? Or, is completing the rooting process something that needs to be done regardless, even if it's not going to help with with the LTE issue?
Also, I tried to change the APN settings in hopes of getting LTE to work, but the option to change/alter the APN settings seems to be disabled. Does this likely have something to do with the phone not being fully rooted?
I also want to mention that when I went to check for an update in the 'Update Center,' it is showing an 'Android System Update' that is specifically for T-Mobile and it's apparently 149.6 MB in size. Should I try to download and install this T-Mobile update? Or is this something that should not be done without fully rooting the phone with SuperSU Installer?
Also, for the record, it is currently running Android version 4.2.2, Kernel version 3.4.0, Build number JDQ39B, and Software version D80110c
I apologize for writing such a lengthy post, but I wanted to be thorough and try to give as much pertinent information as I could think of. FYI, the LG G2 I have is a 32GB device. I am considering just trying to trade it for a Nexus 5, Galaxy S4 or HTC One, to someone who knows about rooting/flashing/modding, but I figured I would at least ask if there might be a simple fix for the LTE issue before trying to trade/sell it.
I would sincerely appreciate any help that I get! And if I need to make a donation for the help, I would be glad to do so. Also, I can provide pictures and/or screenshots for any detailed information that I may need to provide to help with this issue. Thanks very much in advance to anyone who tries to help me with this issue!!

If its indeed the Sprint LS980 and not the T-Mobile D801, then you got screwed because the LTE bands are not compatible. File a complaint and get your money back. He probably modded it to enable GSM. If you sell it to a Sprint user make sure everything is back to stock or it may brick during an OTA, which the next person would blame you for.

Check out http://forum.xda-developers.com/showthread.php?t=2521276
Sent from my LS980 4G using Tapatalk

abhinav.tella said:
If its indeed the Sprint LS980 and not the T-Mobile D801, then you got screwed because the LTE bands are not compatible. File a complaint and get your money back. He probably modded it to enable GSM. If you sell it to a Sprint user make sure everything is back to stock or it may brick during an OTA, which the next person would blame you for.
Click to expand...
Click to collapse
Thanks for replying. As for what you're suggesting, that the Sprint LG G2 is not capable of receiving T-Mobile's LTE signal because of it not having the necessary LTE bands, are you absolutely sure of this? And if so, do you mean that it will not receive any LTE signal whatsoever with a T-Mobile SIM card? Or that it just does not have the proper bands to detect/receive all of the LTE bands?
As for the phone I have actually being the Sprint LG G2 (LG-LS980) device, I am sure that's what it is, as that is the model number that is on the bottom of the back of the phone. However, as I stated, I bought it from someone off of Craigslist (not eBay), so there is no way for me to file a complaint. However, I think I should be able to re-sell it and get my money back, as $260 seems to be a good/reasonable price for a 32GB model in excellent condition.
sudosurootdev said:
Check out http://forum.xda-developers.com/showthread.php?t=2521276
Sent from my LS980 4G using Tapatalk
Click to expand...
Click to collapse
Thanks for the link. I clicked it and checked out that thread, but I was not really sure what it was about. Are you suggesting that I could/should possibly go through the process to try to "Obtain Your MSL, Update PRL, Connect to DFS," because it might enable the phone I have to properly receive T-Mobile's LTE signal? If you would reply to this question and explain to me what good you think trying to go through that process might do for my situation, I would really appreciate it.
By the way, sorry for not replying last night, y'all. I work late-nights and was quite tired after I got home around 6:00 a.m. this morning.

Sprint LS980 uses 1900 MHz, 850 MHz, 2500 Mhz for LTE
2G: GSM850, GSM900, GSM1800, GSM1900
3G: UMTS2100 (B1)
4G: LTE1900 (B25), LTE800 (B26), TD-LTE2500 (B41)
http://pdadb.net/index.php?m=specs&id=5490&c=lg_ls980_g2_td-lte
Verizon VS980 uses the 700 Mhz, 1700/2100 Mhz bands for LTE
2G: GSM850, GSM900, GSM1800, GSM1900
3G: UMTS850 (B5), UMTS900 (B8), UMTS1900 (B2), UMTS2100 (B1)
4G: LTE700 (B13), LTE1700/2100 (B4)
http://pdadb.net/index.php?m=specs&id=4726&c=lg_vs980_g2_4g_lte
T-Mobile D801 uses the 700 Mhz, 1900 Mhz, 1700/2100 Mhz bands for LTE
2G: GSM850, GSM900, GSM1800, GSM1900
3G: UMTS850 (B5), UMTS1900 (B2), UMTS2100 (B1)
4G: LTE700 (B17), LTE1700/2100 (B4), LTE1900 (B2)
http://pdadb.net/index.php?m=specs&id=4810&c=lg_g2_d801_4g_lte
AT&T D800 uses the 700 Mhz, 850Mhz, 1900 Mhz, 1700/2100 Mhz bands for LTE
2G: GSM850, GSM900, GSM1800, GSM1900
3G: UMTS850 (B5), UMTS1900 (B2), UMTS2100 (B1)
4G: LTE700 (B17), LTE850 (B5), LTE1700/2100 (B4), LTE1900 (B2)
http://pdadb.net/index.php?m=specs&id=4978&c=lg_g2_d800_4g_lte
Bands are limited by hardware, not software.
Also note the Sprint 1900 Mhz LTE and Verizon 700 Mhz LTE bands are not compatible with the T-Mobile/AT&T 700 Mhz and 1900 Mhz LTE band as they use a different part of that spectrum.

abhinav.tella said:
Bands are limited by hardware, not software.
Also note the Sprint 1900 Mhz LTE and Verizon 700 Mhz LTE bands are not compatible with the T-Mobile/AT&T 700 Mhz and 1900 Mhz LTE band as they use a different part of that spectrum.
Click to expand...
Click to collapse
Sorry for quoting the entire post, but I'm at work and on my LG F3 (which has a really small screen), but are you specifically stating that it's physically impossible to get T-Mobile's LTE signal with the Sprint version of the LG G2 because it literally lacks the necessary physical hardware to be able to receive it?

AzAssassin said:
Sorry for quoting the entire post, but I'm at work and on my LG F3 (which has a really small screen), but are you specifically stating that it's physically impossible to get T-Mobile's LTE signal with the Sprint version of the LG G2 because it literally lacks the necessary physical hardware to be able to receive it?
Click to expand...
Click to collapse
Yes, only the AT&T and T-Mobile versions are inter compatible with the AT&T version having one extra band (850 Mhz)
For future reference use PDADB.net for accurate hardware information including sub-models. Its very good.

I wasn't aware that Sprint started using sim cards. Is this a hybrid GSM/CDMA phone? And which bands go with which?
So will this phone work, after unlocking, work with Chinese 3G (Band I 2100MHz) and 4G (Band 41 2500MHz) networks?

ther00kie16 said:
I wasn't aware that Sprint started using sim cards. Is this a hybrid GSM/CDMA phone? And which bands go with which?
So will this phone work, after unlocking, work with Chinese 3G (Band I 2100MHz) and 4G (Band 41 2500MHz) networks?
Click to expand...
Click to collapse
Sprint and Verizon's LTE technology requires the use of SIM cards because the device will connect to both the older network and the newer one at the same time. If you yank a SIM card from either carrier's device it will still connect to their CDMA-based network (with 3G technology) but to get their full LTE support it requires a SIM card.
Because of this, Sprint and Verizon devices released since roughly late 2013 have the potential - because they have SIM card slots - of being carrier unlocked. All Verizon devices come carrier unlocked with respect to the SIM card slot now because it was a part of the requirements they agreed to during the FCC bidding process to gain those new frequency allotments back in 2013 - you can go buy any Verizon phone right now, including the Droid Turbo (their flagship phone) and drop a SIM card in it from any other carrier and it'll work just fine without issues. It may not provide LTE support directly because of different LTE band/frequency support so that's what I'll explain below, just for the record, but it WILL work with any GSM SIM card right out of the box.
Sprint, however, wasn't bound by any such requirements and so their devices are not carrier unlocked but sometimes - please note I'm saying SOMETIMES they can be. The Sprint LG G2 is one of those times, and there are two basic ways to do it:
1) Either do all the necessary config/device adjustments to get the SIM card unlocked for use with GSM capabilities (very impractical solution and only useful if you absolutely refuse to use a custom ROM)
2) Use a custom ROM because all the work to unlock the SIM card slot for other carriers is already done for you by the developer of the ROM (or them using code that was ready to go). ROMs like CloudyG2 and others, once installed, offer the ability to use any GSM SIM card in the Sprint G2 without issues.
Having said that, the LTE aspect is where some have issues - Qualcomm "locks down" radio hardware based on the NV (non-volatile) firmware inside it and it's done that way based on the requirements the carrier sets forth. Sprint uses LTE bands (as noted in the post above) that are not directly compatible with T-Mobile's LTE bands - there's no overlap at all; if there were any overlap whatsoever you could feasibly get LTE to work with T-Mobile, but that's not the case with the Sprint G2.
The hardware in the phones is the same (with respect to the GSM capability and LTE falls under that umbrella), it's just that the radio hardware has been "locked down" to only use particular frequency bands. Theoretically it's possible to edit the NV and open up more bands (potentially supporting everything) but that's another thread altogether, literally, and has the side effect of potentially bricking the radio hardware if unsuccessful so people don't even bother with it.
Using the Sprint G2 with T-Mobile will get you HSPA+ capability that'll max out (theoretically) at 42 Mbps which is damned fast, plus HSPA+ offers better signal strength overall than LTE does and better building/structure penetration as well - and better battery life to some degrees (not like it was years ago when LTE hardware and software was truly unoptimized).
When I last had a G2 recently I was pulling about 38 Mbps down and 33 Mbps up in speed testing but I live like 2 blocks away from a T-Mobile cell site here in downtown Las Vegas with line-of-sight to the tower (no obstructions in between) and that's damned fast enough for me and most anyone. LTE is nice but it ain't everything...
Suffice to say if you have a Sprint G2 you're not limited to just using Sprint, obviously - but LTE support will only happen if you use a carrier that overlaps onto the LTE bands/frequencies that Sprint itself uses. That basically rules out any carrier in the US since the remaining carriers of the "big 4" (AT&T, Sprint, T-Mobile, and Verizon) all end up reselling their network service to every other smaller carrier or MVNO - the other 3 carriers don't use the same LTE bands/frequencies so you'll have to be outside the US aka non-domestic to get LTE support. The Verizon G2 offers the potential to get LTE on T-Mobile because they do both share LTE Band 4 but it depends on the precise frequencies in use - more than likely you'll still end up with HSPA+ support more than LTE.
That should clear it up a bit for you...
ps
Next time perhaps take a look at the date of the last post in a thread - this was almost a year old since the last post so... things haven't really changed with respect to the Sprint G2 and LTE on T-Mobile; this info is found in other threads if you do some searching but hopefully you'll understand things better now with the info I provided.

Thanks a lot for all that info. I did check the date and made a new thread as well. I just figured to get more exposure this way.
I understand not much has changed judging by the date but was new to phones capable of CDMA and GSM so wasn't sure how they labeled the bands.
I've looked over the instructions for SIM unlocking and LTE band unlocking but none of those mentioned what bands were for CDMA and which for GSM or if there's any commonly labeled frequencies as the information on CDMA is just not as well laid out in sources I've found.
I remember there being much talk about how iPhone 5s didn't have native support band 41 LTE, which is the only LTE band in China so I'm surprised that there's no talk of use in China of the Sprint LG G2, which seemed to be the only mainstream phone that had band 41 before the Nexus 5 and iPhone 6. Hell, the Galaxy series still doesn't have it. It's also a pain to search for phones with band 41 LTE as China and apparently Uganda are the only countries that have it and sites like gsmarena don't have it as a filter option.

[Q] Lenovo Z90-7 (VIBE SHOT) 4G UK HELP PLEASE?

Hi guys,
I have just bought this phone and flashed it with the latest firmware Android 5.1 as per the post on this forum. I am now very worried because my phone only seems to be connectiong to 2.4ghz network instead of 5ghz. Also I cannot get mobile data working.

What ROM/kernel did you flash? Many ROMs run 5.1.x
Sent from my Nexus 6 using Tapatalk

Rep7ile said:
What ROM/kernel did you flash? Many ROMs run 5.1.x
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Hi I used this rom Z90a40_USR_S118_1505272046_Q2020131.4_ROW_qpst
which was mentioned here on the forum as the best for Android 5.1

Hey man, I've done some research and it seems your ROM/phone should support LGT(4G). I would highly suggest completely wiping your phone, reflash ROM/ Gasps/ kernel (if you have one) and see if the issue persists
Sent from my Nexus 6 using Tapatalk

The seller says I can send the item back for a full refund but unsure if he will give me a refund as I've changed the ROM to 5.1 The worst thing would be sending the device back to China

Okay, have you tried manually setting your APN? Fallow the steps below and findnthe APN settings online for your carrier, let me know what happens.
Many users have told me their 3G/4G LTE data network connection is broke after installing a custom ROM. *Well, in most of these cases, it can easily be fixed by manually setting the APN (Access Point Name). *This applies to any GSM networks such as*AT&T or T-Mobile. *For CDMA networks like Sprint or Verizon, they also use APNs but you don’t have to set them and should work out of the box.
Every carrier uses its own APN Settings to get its 3G/4G LTE network working on an Android smartphone or tablet device. *Now, these APN settings are usually “downloaded” automatically to your*phone*when you insert a SIM card. *BUT, there are times where the APN are not selected automatically OR when the APN settings are not downloaded.
In those instances, your 3G/4G LTE data will not work but that can easily be fixed.
Step 1. First, browse your Settings menu and find the “Access Point Names” menu. *This is usually under “Mobile Network Settings” or “More*mobile Networks or “Mobile Networks” under Settings menu depending on the Android device used.
Step 2. Once you are in the APN Settings menu, first thing you should check it that the APN is on the correct one. *If the correct APN is not checked (sometimes this happens), simply check ON the correct APN for your carrier. *That will make your 3G/4G LTE data working right away
tep 3. There are also times where the wrong APN is listed or there’s simply no APNs listed. *In these rare cases, you can simply add a new APN, hit the “+” button.
Step 4. For APN setting, the “Name” can be anything. *“APN” setting is the most important, usually you only have to fill this out for your phone to work.
For T-Mobile, you can set the “APN” to “fast.t-mobile.com”. *AT&T, you can set “APN” to “phone” or “pta”.
Now setting “APN” will get your data working but you still need to input additional settings to get your MMS working.
ep 5. You can usually Google APN settings for your carrier. *Whether you are in Thailand or in the U.S., simply Google for your APN settings like:
Google “t-mobile APN 4G LTE” for T-Mobile 4G LTE APN settings in the U.S.
Google “True Move APN 3g” for True Move 4G APN settings in Thailand.
Eventually, you should be able to find the full APN settings for your carrier whether you live in Hawaii or on North Pole.
Once you have the correct APN settings, simply input them into your APN settings on the phone
Step 7. Next, make sure to select the new APN Setting you have saved. *Within 5-30 seconds, your phone should start picking up 3G or 4G LTE signals and your data should be working again on the phone.
Sent from my Nexus 6 using Tapatalk

desi112 said:
Hi guys,
I have just bought this phone and flashed it with the latest firmware Android 5.1 as per the post on this forum. I am now very worried because my phone only seems to be working on 3G. When I go into settings and network it only gives me the options to pick a 3G network. I did a lot of research before buying this phone and was assured it would work on 4G within the UK my old phone the Sony Xperia ZR worked on 4G fine. I do have the latest nano sim.
Here are the details of the Lenovo Z90-7 As per GSM Arena
Technology
GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1900 / 2100
4G bands LTE 800 / 1800 / 2100 / 2600 - Lenovo Z90-7
And from my network operator's webpage I get the following info
4G from Tesco Mobile (o2) uses the following network frequencies:
800 MHz (0.8 GHz)
Am I having this problem as I flashed it with new firmware?
Click to expand...
Click to collapse
I believe the phone doesn`t have the LTE 800 frequency.
Search other websites than gsm arena.
That`s why you don`t get 4G.

Hi Friends,
Thanks for the quick replies I really appreciate the help. In regards to the APN settings I've checked these and these seem to be correct.
So it *Should* work EE

Interesting, I was hoping the APN settings were the cause. I'm sorry you couldn't fix your issue. I'm sure you will have better luck with your next device.
Sent from my Nexus 6 using Tapatalk

desi112 said:
Hi Friends,
Thanks for the quick replies I really appreciate the help. In regards to the APN settings I've checked these and these seem to be correct.
Valter84 you are correct I spoke to the seller and he advised that there is a mistake on the listing the phone does not support the LTE 800Mhz frequency.
So it *Should* work in the UK on the network EE which uses Band 3 FDD LTE (1800mhz). I've tried an EE sim and it still does not work at all on 4G.
Click to expand...
Click to collapse
Hi, I have the same trouble as you , anyway I have not flashed my Z90-7 yet. My chinesse seller from Aliexpress claims , that this phone supports all usual LTE frequencies including 800 Mhz.
But I can use here in Czech republic at T mobile provider only 1800 Mhz which covers only Prague and Mlada Boleslav . Rest of our country covers LTE on 800 Mhz only.

vlada.b said:
Hi, I have the same trouble as you , anyway I have not flashed my Z90-7 yet. My chinesse seller from Aliexpress claims , that this phone supports all usual LTE frequencies including 800 Mhz.
Click to expand...
Click to collapse

desi112 said:
vlada.b said:
Hi, I have the same trouble as you , anyway I have not flashed my Z90-7 yet. My chinesse seller from Aliexpress claims , that this phone supports all usual LTE frequencies including 800 Mhz.
Click to expand...
Click to collapse
This seems to be a worldwide problem outside China. It is nothing to do with APN settings, etc.
A company is selling this phone on Amazon USA and they have specifically mentioned 4G does not work in the USA.
I am based in the UK and 4G doesn't work. I have flashed the phone and have now android 5.1 installed on it, but until official EU version of this phone is released we will be stuck with 3G
Click to expand...
Click to collapse

barcomi said:
desi112 said:
This seems to be a worldwide problem outside China. It is nothing to do with APN settings, etc.
A company is selling this phone on Amazon USA and they have specifically mentioned 4G does not work in the USA.
I am based in the UK and 4G doesn't work. I have flashed the phone and have now android 5.1 installed on it, but until official EU version of this phone is released we will be stuck with 3G
Click to expand...
Click to collapse
Guys, just to let you know the phone works 4G on UK EE network, but not on O2.
Click to expand...
Click to collapse

I need help. can't use 5ghz network.
desi112 said:
Hi guys,
I have just bought this phone and flashed it with the latest firmware Android 5.1 as per the post on this forum. I am now very worried because my phone only seems to be connectiong to 2.4ghz network instead of 5ghz. Also I cannot get mobile data working.
Click to expand...
Click to collapse
I can't connecting 5ghz too.
Just only can connecting 2.4ghz.
I can't find 5ghz network in WLAN list.
I succeeded installing the ROM. (use MiFlash tool)
ROM Version: Z90-a40_S118_1505272008_ROW
So, my phone's android version is 5.1
Z90-7 device can't support 5ghz WIFI network? or ROM's problem?
I want to know about this problem's solutions. (I want to use 5ghz wifi network!)
If anybody answer for me, I'll be very grateful.
Thanks for reading.

Chinese markets are deceiving customers
vlada.b said:
Hi, I have the same trouble as you , anyway I have not flashed my Z90-7 yet. My chinesse seller from Aliexpress claims , that this phone supports all usual LTE frequencies including 800 Mhz.
But I can use here in Czech republic at T mobile provider only 1800 Mhz which covers only Prague and Mlada Boleslav . Rest of our country covers LTE on 800 Mhz only.
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Click to collapse
Dear people, wake up, many Chinese markets are deceiving customers by providing them misleading information. LTE bands is one clear example. Chinese LTE bands are diferent and they just flash the device's ROM for multi-language and add Google Play to make it "international version" but it is not. DON'T BUY IT!
I double checked with this company minideal.net which i cannot recommend. The company confirmed full FDD LTE (4G) functionality on following frequency bands: 800/1800/2100/2600MHz. But my smartphone IS NOT WORKING on 800MHz in The Czech Republic because it is only 1800/2100/2600MHz in fact. Within the PayPal Dispute and Claim they completely turned around their statements concerning LTE bands.
Complete tests were made with my network operator provider to rull out other problems. You can easily check that in these comments and in some fair e-shops where they don't twist the truth.

Mydoma said:
Dear people, wake up, many Chinese markets are deceiving customers by providing them misleading information. LTE bands is one clear example. Chinese LTE bands are diferent and they just flash the device's ROM for multi-language and add Google Play to make it "international version" but it is not. DON'T BUY IT!
I double checked with this company minideal.net which i cannot recommend. The company confirmed full FDD LTE (4G) functionality on following frequency bands: 800/1800/2100/2600MHz. But my smartphone IS NOT WORKING on 800MHz in The Czech Republic because it is only 1800/2100/2600MHz in fact. Within the PayPal Dispute and Claim they completely turned around their statements concerning LTE bands.
Complete tests were made with my network operator provider to rull out other problems. You can easily check that in these comments and in some fair e-shops where they don't twist the truth.
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Click to collapse
This is correct, the phone doesn't work on 800MHz. However it should because Qualcom 615 supports 800MHz. the reason it doesn't work is because the modem is probably locked within the ROM. I am hoping once this phone is release european version then it should work at 800MHz.

Czech version of Lenovo Vibe Shot working on 800Mhz LTE seamlessly
barcomi said:
This is correct, the phone doesn't work on 800MHz. However it should because Qualcom 615 supports 800MHz. the reason it doesn't work is because the modem is probably locked within the ROM. I am hoping once this phone is release european version then it should work at 800MHz.
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Click to collapse
Hi, i already have had the European version of Lenovo Vibe Shot (chinese name Lenovo Z90-7) in my hands. I purchased it recently to compare the Czech and the Chinese model concurrently. All worked perfectly well with the Czech model. The device connected to 800MHz LTE band (band 20) INSTANTLY after the Android system start. No setting necessary at all. It connected to 800MHz T-mobile band in the Czech Republic. While with the Chinese only 3G or less! Another LTE band (2100MHz perhaps) worked well - Vodafone Czech Republic. So LTE hardware is ok but 800MHz missing...
The test is here: youtube.com/watch?v=Mv5RoN_BYSc
No doubt i was intentionally deceived by the seller namely minideal.net; and many others customers are being deceived the same way!

coptrade said:
Hi, i already have had the European version of Lenovo Vibe Shot (chinese name Lenovo Z90-7) in my hands. I purchased it recently to compare the Czech and the Chinese model concurrently. All worked perfectly well with the Czech model. The device connected to 800MHz LTE band (band 20) INSTANTLY after the Android system start. No setting necessary at all. It connected to 800MHz T-mobile band in the Czech Republic. While with the Chinese only 3G or less! Another LTE band (2100MHz perhaps) worked well - Vodafone Czech Republic. So LTE hardware is ok but 800MHz missing...
The test is here: youtube.com/watch?v=Mv5RoN_BYSc
No doubt i was intentionally deceived by the seller namely minideal.net; and many others customers are being deceived the same way!
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Click to collapse
This is amazing. I hope soon someone will release the european ROM, so I can update my chinese phone with european ROM. Do you think the Chinese phone will work on 800MHz with the European ROM?

barcomi said:
This is amazing. I hope soon someone will release the european ROM, so I can update my chinese phone with european ROM. Do you think the Chinese phone will work on 800MHz with the European ROM?
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Click to collapse
Well, i consulted this with some mobile phone services earlier and they did not recommend updating the ROM like that. Your device can end up dead after it. The ROM must be perfectly tuned to the particular HW specification of your device to avoid the fatal consequences. It is quite risky... i was thinking the same way. I am disputing the seller via PayPal asking for partial refund to be able to re-sell the phone to someone who can do without 800MHz.
Also you cannot freely update the android system without loosing the multi-language and Google Play... So shopping mobile phones in China? NOT A GOOD EXPERIENCE FOR ME!
---------- Post added at 04:01 PM ---------- Previous post was at 03:44 PM ----------
coptrade said:
Hi, i already have had the European version of Lenovo Vibe Shot (chinese name Lenovo Z90-7) in my hands. I purchased it recently to compare the Czech and the Chinese model concurrently. All worked perfectly well with the Czech model. The device connected to 800MHz LTE band (band 20) INSTANTLY after the Android system start. No setting necessary at all. It connected to 800MHz T-mobile band in the Czech Republic. While with the Chinese only 3G or less! Another LTE band (2100MHz perhaps) worked well - Vodafone Czech Republic. So LTE hardware is ok but 800MHz missing...
The test is here: youtube.com/watch?v=Mv5RoN_BYSc
No doubt i was intentionally deceived by the seller namely minideal.net; and many others customers are being deceived the same way!
Click to expand...
Click to collapse
Ok, i understand your point. I was thinking the same way. Some mobile phone services would refuse to update the ROM like that though, because it can kill the mobile completely. And who will take the responsibility? The Chinese dishonest dealers should! Let us tell them, we don't like their deception and lies! They are playing the "we don't know" game, but they surely know enough about the differences between Chinese and non-Chinese LTE bands.
But yes, there should be a way to change the ROM the same way the distributors of the real European version of this phone do it. Only where shall we get that ROM and ROM update done? Because, as i have already experienced, the local (Czech) Lenovo representation has no interest in helping owners of Lenovo products purchased in China. How predicable...
---------- Post added at 04:06 PM ---------- Previous post was at 04:01 PM ----------
desi112 said:
The seller says I can send the item back for a full refund but unsure if he will give me a refund as I've changed the ROM to 5.1 The worst thing would be sending the device back to China
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Did you pay via PayPal? You can dispute or claim... Because i say it is just intentional form of deception what they do...
---------- Post added at 04:10 PM ---------- Previous post was at 04:06 PM ----------
barcomi said:
desi112 said:
This seems to be a worldwide problem outside China. It is nothing to do with APN settings, etc.
A company is selling this phone on Amazon USA and they have specifically mentioned 4G does not work in the USA.
I am based in the UK and 4G doesn't work. I have flashed the phone and have now android 5.1 installed on it, but until official EU version of this phone is released we will be stuck with 3G
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Click to collapse
You are right some (many) Chinese dealers are cheating... and we pay for it.
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Click to collapse

coptrade said:
Well, i consulted this with some mobile phone services earlier and they did not recommend updating the ROM like that. Your device can end up dead after it. The ROM must be perfectly tuned to the particular HW specification of your device to avoid the fatal consequences. It is quite risky... i was thinking the same way. I am disputing the seller via PayPal asking for partial refund to be able to re-sell the phone to someone who can do without 800MHz.
Also you cannot freely update the android system without loosing the multi-language and Google Play... So shopping mobile phones in China? NOT A GOOD EXPERIENCE FOR ME!
I changed my ROM, but it is just simplified ROM (done by chinese guys) without the bloatware ...
I got it from this link
http://forum.xda-developers.com/android/general/lenovo-z90-7-vibe-shot-international-t3148018
Click to expand...
Click to collapse