[Q] Bad call quality, wrong baseband? - LG Optimus G (International)

So I bought a LG Optimus G here in Portugal. My device is made in Korea (in another LG devices I think LG 2x, they said that Korea versions have this same problem too, and they resolve it changing the baseband to a german version):
Android 4.1.2
Software version: E97510d-EUR-XX
Baseband version: APQ8064/MDM9x15M
I buy the phone from a online shop, so I don't know if they buy the phone from a foreign country and sell it here. Is this version the appropriate for Portugal? My operator 4G band is 800MHz, 1800MHz and 2600MHz.
The problem is that when I'm on a call I hear a static noise and bad quality calls, and the other people hear it too from my part (they do not hear it when talking with other people). I already did a factory reset when I received my phone before rooting it. This same problem happened to me with my nexus 4 some weeks ago, and I ask for a refund because of this same problem. I buy this phone hopping that at least I will not have bad quality calls problems but it seems that I'm out of luck.
I tryed with 4G, 3G and 2G and in all options the bad quality is there. So what can I do, anyone knows?
Best regards,
Pedro

I could reply in Portuguese but rules are rules. I do have a LGOG and don't have any issues with voice, at least in 3G, in 4G I can't. remember if I ever made a call showing 4G (brand new in Switzerland), but I'll keep an eye on it. I did have issues detecting 4G and I had to find the solution by myself, as none of the providers did it. Now it works fine. Swiss providers operate in the 1800 band.
Also, I solved my issue with 4G, among other change, by flashing version 10F Germany (France or Italy also have version 10F as well as Portuguese TMN).
Sent from my LG-E975 using XDA Premium HD app

I found that the problem is in the operator. If I switch from 3G/4G to 2G everything works fine. So I will have to complain to operator TMN xD

Related

Question on Tmobile Version of HTC Touch Pro2

I have a T-Mobile Version of HTC Touch Pro 2.
Can somebody please confirm if this mobile will work with 3G Asian Bands ??
or
In simple words, can i use the 3G Feature available in countries like India or Singapore with the T-Mobiles version of HTC Touch Pro 2 ???
Please advise !!!!
PS : And forgive me if this question is a repeat from earlier threads. I read few threads. But i didnt see a definite answer for this.
AFAIK T-Mobile TP2 uses UMTS 1700/2100.
According to http://www.gsmworld.com/roaming/gsminfo/cou_in.shtml there is no 3G network in India yet.
And for Singapore http://www.gsmworld.com/roaming/gsminfo/cou_sg.shtml 3G is available on 2100.
3G in India
Yes - We do have 3G services in India. Iam not even looking at the link that you gave.
Iam quiet sure, BSNL India is offering various 3G services from Corporate Services to DATA transfer services.
I may be wrong, But to my knowledge, we do have 3G servies here for over 12 months...
I agree... I can't see India not having 3G. Sounds like the GSM alliance needs to update their site.
quid246 said:
I agree... I can't see India not having 3G. Sounds like the GSM alliance needs to update their site.
Click to expand...
Click to collapse
Well, their site also says that T-Mobile doesn't have 3G.
Wikipedia Data
Data from Wikipedia -
http://en.wikipedia.org/wiki/List_of_Deployed_UMTS_networks
This is my understanding...
T0 my knowledge,
Universal 3G Standard is UMTS2100. Tmobile Touch Pro 2 supports that anyway.
Not just for US, But also for most of the other countries UMTS2100 is a standard 3G path.
IT SHOULD WORK FINE ACROSS THE WORLD. UK VODAPHONE provide 3G access via UMTS2100. I havent read the details for BSNL 3G service in India, becos i didnt find the details anywhere ! But one of my friend who bought a same Tmobile's Android version phone works fine with BSNL's 3G. Iam quiet sure BSNL uses the same thingy....
And to quote another example, 3 Top mobile operators in Singapore (ASIA) --- * Mobile One, * StarHub and * Singapore Telecom Mobile Pvt. Ltd., offer 3G at UMTS 2100.
As a matter of fact, with respect to design - Tmobile offering of Touch Pro 2 is more reliable and more sturdy than the original version of TP2. It is just the fanciness that takes lead for the original version which are more prone to scratches.
I may be wrong.... Please let me know if you have more details and correct me if iam wrong................
3G Services across the world - http://en.wikipedia.org/wiki/List_of_Deployed_UMTS_networks
T-Mobile version has band I and IV, that it can be used in Asia.
indianinworld said:
I have a T-Mobile Version of HTC Touch Pro 2.
Can somebody please confirm if this mobile will work with 3G Asian Bands ??
or
In simple words, can i use the 3G Feature available in countries like India or Singapore with the T-Mobiles version of HTC Touch Pro 2 ???
Please advise !!!!
PS : And forgive me if this question is a repeat from earlier threads. I read few threads. But i didnt see a definite answer for this.
Click to expand...
Click to collapse
mingkee said:
T-Mobile version has band I and IV, that it can be used in Asia.
Click to expand...
Click to collapse
Thank you so much for your answer on this.
I assumed that. But some folks here and outside this community were broadcasting that US version phones wont work in Asia and Europe.
Even one member in this forum PM'ed me tht Tmobiles version wont work in Asia.
thanks for ur time to get me an reply on this sir...

[Q] 3 G doesn't work

I bought desire hd from Canada
it was locked on telus network
i have rooted the mobile and install new rom but 3 g doesn't work
edge only work
i tried to install application to fix the 3 g
but it didn't work
please any one have solution
my network called etisalat
i' am in egypt
Either it doesn't support the CDMA 3G bands in your country or radio related. Please consult the previous seller about the mobile network band the phone has. If supported, change the mix of your kernel and radio until you get it working.
There is no solution as there is no problem with the phone.
The issue at hand is that north American phones use different frequencies for 3g than that of well frankly everyone on the eastern hemisphere(excluding Australia). Nam phones use 850/1900 while your are uses 900/2100.
There is nothing you van do to change that. You are stuck with edge unless you get a different phone
Sent from my Inspire 4G using XDA

[Q] LG Optimus G-Pro F240K 3G not working

I bought an Korean LG Optimus G pro from ebay few days ago and updated it to kikat.
When i connect to internet with my sim it shows as 2G on top and never goes to 3G. The 2G speeds are too slow i cant load any website with it.
I tried two sims from two network providers and the result is the same. The band frequencies of this phone is exactly same as my old phone and matches the network providers band widths. Also my old phone had no problems with 3G.
I didn't start using my sim since kitkat update so i have no idea if i it worked when it was on jelly bean.
Sorry if my english was bad
Thanks in advance, Any help or suggestion is greatly aprrecieated

[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.
Click to expand...
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.
Click to expand...
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.
Click to expand...
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!
Click to expand...
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?
Click to expand...
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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
You are right some (many) Chinese dealers are cheating... and we pay for it.
Click to expand...
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

LG G8 T-Mobile signal issues

Hi,
I would really appreciate if someone could help me with my LG G8.
I bought it off ebay , the phone is on T-Mobile version running Android 10 with the software version G820TM20i .
Since the phone was not available to buy in UK, i've ordered it from US .
I am using it with a EE sim card which is supposed to have the best network coverage in UK , but still the signal bar only shows 1 or 2 lines from 5 ( 5 being max strength ) .
When using the SIM card with another phone ( S10+ ) originally bought from UK I am not having any signal issues.
My question is : Could this be a problem with the stock ROM being a US version ?
I am thinking of flashing another ROM probably one from Europe or even UK, but unfortunatelly I don't know which one is the best.
Could anyone advise me ?
Thanks.
I have the same issues. Mine is a factory unlocked G820QM (US version).
Not working well in Singapore.
On the network with the best coverage just 2 bars and just UMTS.
With another network 3 bars and LTE but ... no mobile data.
Not easy getting these US phones to work overseas ...
It should be easy, i used to flash my lg g6 and lg g4 with ROMs in order to fix this kind of issues, with the help of the DEVs from here.
It's so sad that this forum is no longer that active like it used to be .
The G6 and G7 was also sold in Europe, SEA and so on. So flashing to other locations would be possible.
The G8 was only sold in the US, Korea and Canada. Still possible to flash to be able to work in the UK?

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