Develop Bugs

GSM or CDMA help?

I have a t-mobile touch pro 2 from htc and i dont know if it is GSM or CDMA, how do you check? im a noob at this so i wouldnt know.. Also is living in american version different from overseas version of the phone for t-mobile?

t-mobile would be GSM
the US version would be locked to US t-mobile and i dont think you would be able to use it internationally without unlocking first

what do you mean by locked to US t-mobile and for sure it is GSM? dont want to risk bricking my phone :/

That means that you can ONLY use your TP2 on the US T-Mobile Network, unless you unlock the sim. And yes T-Mobile Touch Pro 2 is GSM.

okay thanks a lot. any advice you guys want to give when you guys were starting off?

pandaxownage said:
I have a t-mobile touch pro 2 from htc and i dont know if it is GSM or CDMA, how do you check? im a noob at this so i wouldnt know.. Also is living in american version different from overseas version of the phone for t-mobile?
Click to expand...
Click to collapse
T-Mobile anywhere worldwide is GSM, not CDMA. (Verizon and Sprint...and a few others are CDMA).
However, the version of TP2 released/branded by T-Mobile USA is different -- with somewhat different radio hardware -- than what is used in Europe.
It will definitely work on the EDGE-speed GSM networks in Europe...but not as sure about the 3G-speed bands.
Kenchi* said:
That means that you can ONLY use your TP2 on the US T-Mobile Network, unless you unlock the sim.
Click to expand...
Click to collapse
That's not quite true...it's only true if you want to put a non-T-MoUSA sim card in your phone. I've taken my previous (not TP2) T-MoUSA phones to Europe more than once and they work and access the networks fine. It's just that you have to pay international roaming charges...but it definitely works.
T-Mobile international data roaming charges in most places in the GSM world are $15 per megabyte...so that's pretty steep for web browsing, but not bad for mostly-text e-mail which is typically only a few kilobytes per e-mail.
Charges for international voice calls are quite high, too. That's why some people who plan to make local calls -- e.g., to call a Rome number while in Rome -- (or use a lot of data) get a local/European/whatever sim card...and that's the situation for which you need to have the sim-unlock done.

pandaxownage said:
okay thanks a lot. any advice you guys want to give when you guys were starting off?
Click to expand...
Click to collapse
Run these two cabs (I also recommend running and archiving all cabs you use, in a folder on your SD card)....they're the official "welcome basket" for all new TP2 owners
Together they help clear up memory management issues the TP2 has, which you would see the negative effects of rather quickly.
The first one turns off internet pre-caching (a waste of resources with little or no benefit), and the second one lets the phone free up memory better when apps are done using it.

sirphunkee said:
Run these two cabs (I also recommend running and archiving all cabs you use, in a folder on your SD card)....they're the official "welcome basket" for all new TP2 owners
Together they help clear up memory management issues the TP2 has, which you would see the negative effects of rather quickly.
The first one turns off internet pre-caching (a waste of resources with little or no benefit), and the second one lets the phone free up memory better when apps are done using it.
Click to expand...
Click to collapse
i am currently using clean ram should i delete that?

pandaxownage said:
i am currently using clean ram should i delete that?
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Click to collapse
Nope, that's just one more tool that can help, it just may not need to lend as much of a hand after you run those.

thanks, anything else i should need or know before i start flashing and stuff?

pandaxownage said:
thanks, anything else i should need or know before i start flashing and stuff?
Click to expand...
Click to collapse
Read the first post of "Flashing your first GSM Rom..." thread -- and associated HardSPL thread -- carefully.
That's the most important thing you can do before flashing custom rom.

just to make sure its http://forum.xda-developers.com/showthread.php?t=550131
and http://forum.xda-developers.com/showthread.php?t=550540 right?

pandaxownage said:
just to make sure its http://forum.xda-developers.com/showthread.php?t=550131
and http://forum.xda-developers.com/showthread.php?t=550540 right?
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Click to collapse
Yes and yes.

should i download the cooked rom and after hspl i install then flash or how does it work?

pandaxownage said:
should i download the cooked rom and after hspl i install then flash or how does it work?
Click to expand...
Click to collapse
The big bold red steps #2 and #3 at that second link answer that for you

pandaxownage said:
I have a t-mobile touch pro 2 from htc and i dont know if it is GSM or CDMA, how do you check? im a noob at this so i wouldnt know.. Also is living in american version different from overseas version of the phone for t-mobile?
Click to expand...
Click to collapse
If you got the phone directly from HTC, it is probably the international verson that works with the European T-Mobile high speed network. Does the box it came in say "T-Mobile" or "HTC"?
But it is definitely GSM.
Is it unlocked?

it came in the t-mobile box. what do you mean by unlocked?

pandaxownage said:
it came in the t-mobile box. what do you mean by unlocked?
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Click to collapse
altered at the firmware level to allow it to work with sim cards from other carriers. It's something you have to do or pay somebody to do for you, so if you did neither, then it's still "sim-locked"

yeah its locked :X

pandaxownage said:
yeah its locked :X
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Click to collapse
Not a big deal, don't sweat it...that has no bearing on flashing radios or roms, only matters if you want to use it on a carrier other than T-Mobile (US)
I think what stevedebi was asking for is because the euro version comes unlocked from the factory, and I believe is labeled as such.

About to get an Evo 4G. A few newb questions.

There is someone selling a barely used Evo4G for around $100 and I'd like to get it. I'm just concerned with rooting and custom Roms.
1.) How easy is it to root and install a custom rom?
2.) What is this GSM / CDMA thing? I'm a super newb so I'm not really sure what those are. How do I check if the network I'm using is GSM or CDMA?
3.) The seller says she got it from Dubai. Would there be different hardware versions of the device like some of the other phones with regional differences?
4.) What should I watch out for when installing custom ROMs? Like I know some roms for sprint wont work for verizon or something...

raylgo said:
There is someone selling a barely used Evo4G for around $100 and I'd like to get it. I'm just concerned with rooting and custom Roms.
1.) How easy is it to root and install a custom rom?
2.) What is this GSM / CDMA thing? I'm a super newb so I'm not really sure what those are. How do I check if the network I'm using is GSM or CDMA?
3.) The seller says she got it from Dubai. Would there be different hardware versions of the device like some of the other phones with regional differences?
4.) What should I watch out for when installing custom ROMs? Like I know some roms for sprint wont work for verizon or something...
Click to expand...
Click to collapse
1. It's pretty easy to root but if your on the latest update which is 2.3.5 you have to use HTCdev.com or you can downgrade to to use another exploit like unrevoked it revolutionary.
2. GSM are phones that use SIM cards. CDMA are phones that do not use a SIM card.
3. Nope the evo4g was only available in the US. There are multiple hardware versions like 004. Only way it would be available there is if it was exported there and flashed to another carrier that met the requirements
4. Roms are device specific. You have to flash roms meant for your device. If you try and flash a rom from another phone you could brick your phone. There are some roms that are only for metro PCS users and boost mobile. Just don't flash those and you should be fine
Sent from my PC36100 using XDA

It's n00b by the way.
Sent from my PC36100 using Tapatalk

The seller says she got it from Dubai.
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Click to collapse
Sounds VERY fishy to me....Be careful how you pay them.

sitlet said:
Sounds VERY fishy to me....Be careful how you pay them.
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Click to collapse
+100 on this . Ciudado.
There are no GSM evos. And I have my doubts there are cdma networks in Dubai (or whatever middle eastern place the OP said, I forget the OP).
your cant put a rom for a Verizon phone on an Evo, unless somebody ports it for Evo.
Good luck. You're wise to ask your questions here, that was a good call
Sent from my PC36100 using xda premium

Yeah I'll check it out first and try to play with it before buying it but the phone part of it isnt really a big deal. I only have one sim card and I have my optimus one for that. I just wanted to check if it really is an Evo 4G.
I think that the main reason it is dirt cheap is that the owner doesnt know how about it being CDMA only and it is unusable for her here... I'll treat it as a a an entertainment device
The picture of the phone shows a Sprint logo on the back. So I will be flashing only Sprint specific roms right?

raylgo said:
Yeah I'll check it out first and try to play with it before buying it but the phone part of it isnt really a big deal. I only have one sim card and I have my optimus one for that. I just wanted to check if it really is an Evo 4G.
I think that the main reason it is dirt cheap is that the owner doesnt know how about it being CDMA only and it is unusable for her here... I'll treat it as a a an entertainment device
The picture of the phone shows a Sprint logo on the back. So I will be flashing only Sprint specific roms right?
Click to expand...
Click to collapse
Every rom in the evo4g development section are Sprint specific except a few. You can only flash roms for your device not others. The evo4g is a Sprint phone every Evo4g has a Sprint logo even if its not on Sprint
Sent from my PC36100 using XDA

Alright awesome. I'll probably put a custom rom on it right away. I'll check the phone out tomorrow so you guys will be seeing a lot of me
Would have wanted to try out a Sense rom but I've read that it's not compatible with bluetooth gaming controllers (wii remote or 6 axis controller) soI'll be looking for CM or AOSP roms.

[Q] Flash to t-mobile is it possible?

Hi guys,
this may not be the proper forum for this if it is not i apologize.
I have have the cricket galaxy S3 which I payed retail for a few months ago, I am moving to a area where they do not cover, I would like to bring my s3 over to tmobile but im running into a strange issue.
The phone is set to cdma mode in the the engineering menus i can switch it over to gsm and it has the frequencies that tmobile uses but i can not get it to see anyone else's sim card other then crickets, its not an unlock problem, it just says please insert sim with anyone else's, they do something weird they are cdma but have a sim card and the phone will not work without it. I tried installing a rom with the tmobile baseband as an experiment thinking well it may be that, but it didn't work.
I am having a hard time believing there is not a way to get this done so I am turning to the most informed android community I know of for advice, Dose anyone have any thoughts on how to accomplish this?
Please not I am not scared to brick this phone because if I cant get it switched over its a $500.00 paperweight to me anyway it has a cracked glass so I wouldn't be able to sell it anyway.

What model is it? I think cricket is closely related to sprint or verizon. And as far as I know no ones been able to use those models on the tmob or att networks with any success. Just because the option is in the engineering menus does not mean the phone is capable. It was just easier than creating separate apps for every model s3.
Now that T-Mobile has lte in some areas this may have changed a little, but in the past I know cdma phones were not compatible with T-Mobiles gsm network. So there may be a way IF lte is in your market, but I still wouldnt get my hopes up much.
Sent from my SGH-T999 using xda premium

DocHoliday77 said:
What model is it? I think cricket is closely related to sprint or verizon. And as far as I know no ones been able to use those models on the tmob or att networks with any success. Just because the option is in the engineering menus does not mean the phone is capable. It was just easier than creating separate apps for every model s3.
Now that T-Mobile has lte in some areas this may have changed a little, but in the past I know cdma phones were not compatible with T-Mobiles gsm network. So there may be a way IF lte is in your market, but I still wouldnt get my hopes up much.
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
it is identical to the verizon one, model is like 530 I think and the verizon is 535 (dont have in in front of me), but ive seen on youtube someone get the verizon s3 to work on gsm but hitting a couple settings, hence my frustration.

neocrypter said:
it is identical to the verizon one, model is like 530 I think and the verizon is 535 (dont have in in front of me), but ive seen on youtube someone get the verizon s3 to work on gsm but hitting a couple settings, hence my frustration.
Click to expand...
Click to collapse
It will not work I believe ..But here is some info Here
Maybe this here I think the closes ROM is MetroPCS

Qverse said:
It will not work I believe ..But here is some info Here
Maybe this here I think the closes ROM is MetroPCS
Click to expand...
Click to collapse
See I looked at that but I couldnt get it to work with my phone, the part that is hanging me up is it refuses to see the gsm sim card, though outwardly they look identical to the lte card that is in my phone im thinking it has to do with the encoding on them.

i have been trying to Odin flash the stock vzw firmware to it, since the hardware is identical, but i cant get past the qualcomm secure boot check

neocrypter said:
See I looked at that but I couldnt get it to work with my phone, the part that is hanging me up is it refuses to see the gsm sim card, though outwardly they look identical to the lte card that is in my phone im thinking it has to do with the encoding on them.
Click to expand...
Click to collapse
So what happens went you put the sim in to your UNLOCKED phone?

neocrypter said:
i have been trying to Odin flash the stock vzw firmware to it, since the hardware is identical, but i cant get past the qualcomm secure boot check
Click to expand...
Click to collapse
I wouldn't try that again. Way too risky. Odin won't flash an official firmware to a different model device. But if you get it to it would be more likely to brick your phone than not. I know they're practically identical, but any difference in bootloaders could cause it.
Sent from my SGH-T999 using xda premium
---------- Post added at 10:20 PM ---------- Previous post was at 10:16 PM ----------
And I know you said you're not worried about bricking it, but even with cracked glass you can still sell it, probably for a good bit more than you think.
And you did imply you are unlocked. Are you though, for sure?
Sent from my SGH-T999 using xda premium

DocHoliday77 said:
I wouldn't try that again. Way too risky. Odin won't flash an official firmware to a different model device. But if you get it to it would be more likely to brick your phone than not. I know they're practically identical, but any difference in bootloaders could cause it.
Sent from my SGH-T999 using xda premium
---------- Post added at 10:20 PM ---------- Previous post was at 10:16 PM ----------
And I know you said you're not worried about bricking it, but even with cracked glass you can still sell it, probably for a good bit more than you think.
And you did imply you are unlocked. Are you though, for sure?
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
well here is the thing, about the unlocked bit I am not sure, but it dose not prompt me for an unlock code, it simply just dose not see any other sim thats put in it, it just says No Sim. I gave up on flashing it with odin, I remembered the rom I was running had options for all major us carriers in it and cricket so i played around with that re-flashing the rom to it try a few things and well that didn't work either.

Well if you don't get it unlocked its probably not going to work with any other carriers network.
http://forum.xda-developers.com/showthread.php?t=2023709
That thread may help. It's for gsm phones so I don't know if it'll do you any good, but it's worth a shot!
The Rom itself will have little to do with getting it working on another network. The main items that you probably need to worry about are unlocking and that SIM card.
The sim is tmob right? Does it work fine in other T-Mobile phones?
If you really do think.it's the Rom you may be able to flash a stock based Rom from the T999. Get verification first though as it's probably not like att where we can just flash theirs and it just works! You'd most likely need it ported.
Sent from my SGH-T999 using xda premium

[Q] Switched carriers, ROM questions

So I recently switched from tmobile to at&t and I am able to use my new sim in the phone but I was wondering, do i still use the ROMs specific to this device or use the at&t ones? I figured I continue to use the tmobile ones becasue the device itself obviously didnt change but I just want to make sure something hardware wise doesnt mess up.
thanks

You can run both types of roms. You always could:
http://forum.xda-developers.com/showthread.php?t=2295557
Sent from my SGH-M919 using XDA Premium 4 mobile app

naandrade said:
So I recently switched from tmobile to at&t and I am able to use my new sim in the phone but I was wondering, do i still use the ROMs specific to this device or use the at&t ones? I figured I continue to use the tmobile ones becasue the device itself obviously didnt change but I just want to make sure something hardware wise doesnt mess up.
thanks
Click to expand...
Click to collapse
It seems you understand what I'm gonna say, but it's still worth mentioning again. Remember that in the end, the device is still a T-Mobile M919. What I mean by that is that when it comes to kernels and most importantly - Odin-flashable firmwares and modems, you must use files specifically for the T-Mobile S4.

Why get AT&T version when T-mobile variant can be sim unlocked for $5

Title says it all. I'm running a 851 T-mobile variant with TWRP and AOKP (new rom posted today) on it. Same bands and LTE works perfect. So the question stands why don't you AT&T owners sell yours and do the same? More development is going on since the bootloader is already unlocked and the more using one version the better for development as well in my eyes.
Maybe there is a specific reason but what am I missing?

I'm on Sprint and paid 99 for my phone. That's the only reason.

Mahapederdon said:
I'm on Sprint and paid 99 for my phone. That's the only reason.
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Click to collapse
Makes sense not switching carriers, and sprint is CDMA not GSM so wouldn't work regardless. Threads more toward the AT&T owners and all the Bootloader Bounty chatter....

Got ya. Us Sprint guys are in the same boat. If they succeed in an unlock I'm definitely gonna donate if they don't charge anything for it.

Well AT&T is the better network hands down so there's that and if someone didn't think about bootloaders and development before purchasing chances are they don't need or want to root so there's 2 really good reasons why not to sell an AT&T G3 for the same exact phone on another network. That and also that its the same exact phone on another network.

I did it, mine 855P is the same as international 855 but with LTE from Mexico and USA so I sold it and bought a T-Mobile just for the same price =D and I still have my wireless charger that came with my 855P + an upgrade from 16gb/2gb RAM to 32gb/3gb RAM, a good deal.

xlxcrossing said:
Well AT&T is the better network hands down so there's that and if someone didn't think about bootloaders and development before purchasing chances are they don't need or want to root so there's 2 really good reasons why not to sell an AT&T G3 for the same exact phone on another network. That and also that its the same exact phone on another network.
Click to expand...
Click to collapse
Well that exactly what i did had the 850 and sold it on ebay and got the 851. 851's are cheaper actually. Still on AT&T network, agree its the better network hands down. If I chose to sell this it can go either ATT or T-mobile and works on LTE for both.
I guess i don't see your argument at all..

That's really not a terrible idea, lol. I friggen hate having this locked bootloader on my 850. Does the TMobile variant have the EXACT same bands as the AT&T one?
My other option is to just sell this stupid thing and buy a Nexus X when it comes out.

badtzo said:
I did it, mine 855P is the same as international 855 but with LTE from Mexico and USA so I sold it and bought a T-Mobile just for the same price =D and I still have my wireless charger that came with my 855P + an upgrade from 16gb/2gb RAM to 32gb/3gb RAM, a good deal.
Click to expand...
Click to collapse
Exactly, and thanks for making remember it has the Qi wireless which is much more popular.

jeebuspwnz said:
That's really not a terrible idea, lol. I friggen hate having this locked bootloader on my 850. Does the TMobile variant have the EXACT same bands as the AT&T one?
My other option is to just sell this stupid thing and buy a Nexus X when it comes out.
Click to expand...
Click to collapse
Do it, I made money actually. And you can literally download the IMEI unlock app on Google Play (https://play.google.com/store/apps/details?id=com.servtified.unlock_lg_g3&hl=en) and pay 5 dollars to have it working on AT&T LTE in the matter of minutes. You do need to add your APN info for ATT but that''s it, works awesome!
Yes it has the exact same bands identical.

ej_424 said:
Well that exactly what i did had the 850 and sold it on ebay and got the 851. 851's are cheaper actually. Still on AT&T network, agree its the better network hands down. If I chose to sell this it can go either ATT or T-mobile and works on LTE for both.
I guess i don't see your argument at all..
Click to expand...
Click to collapse
Not an argument, actually a reason to be satisfied with their purchase is that its on AT&T. I'm on T-Mobile but I don't defend their service, just went through them to lease the G3 and not pay outright for it. Going back to Straight Talk soon since I already SIM unlocked it. I would hope that a normal non obsessed person would consider all their options for US variants and not go through the headache of switching carriers for the exact same phone and sell the other. Not everyone cares about unlocking phones, some people are satisfied with simply having them, I'm not one of those people, but they do exist.

xlxcrossing said:
Not an argument, actually a reason to be satisfied with their purchase is that its on AT&T. I'm on T-Mobile but I don't defend their service, just went through them to lease the G3 and not pay outright for it. Going back to Straight Talk soon since I already SIM unlocked it. I would hope that a normal non obsessed person would consider all their options for US variants and not go through the headache of switching carriers for the exact same phone and sell the other. Not everyone cares about unlocking phones, some people are satisfied with simply having them, I'm not one of those people, but they do exist.
Click to expand...
Click to collapse
Hear you loud and clear, but we are on XDA right? Having said that anyone on this forum is interested in having full control of their phone period.

ej_424 said:
Hear you loud and clear, but we are on XDA right? Having said that anyone on this forum is interested in having full control of their phone period.
Click to expand...
Click to collapse
Why would you assume that? I've seen plenty of posts by users running stock unrooted devices. Just because its not unlocked doesn't mean people don't have a passion for development.

xlxcrossing said:
Why would you assume that? I've seen plenty of posts by users running stock unrooted devices. Just because its not unlocked doesn't mean people don't have a passion for development.
Click to expand...
Click to collapse
Getting off topic, the point of the thread was for those who are on AT&T and want a unlocked bootloader. I dont think some people are aware of the logical move, and that both versions have the same bands.

Care to share a link for this AOKP rom you speak of?

qbanlinxx said:
Care to share a link for this AOKP rom you speak of?
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Click to collapse
yes i dont see it anywhere
---------- Post added at 03:06 AM ---------- Previous post was at 02:52 AM ----------
ej_424 said:
Title says it all. I'm running a 851 T-mobile variant with TWRP and AOKP (new rom posted today) on it. Same bands and LTE works perfect. So the question stands why don't you AT&T owners sell yours and do the same? More development is going on since the bootloader is already unlocked and the more using one version the better for development as well in my eyes.
Maybe there is a specific reason but what am I missing?
Click to expand...
Click to collapse
op, where is this aokp rom you speak of?

scottshebs said:
yes i dont see it anywhere
---------- Post added at 03:06 AM ---------- Previous post was at 02:52 AM ----------
op, where is this aokp rom you speak of?
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Click to collapse
Sorry for the confusion, its not the original aokp. It's under android development section. Its not lgs rom though.

ej_424 said:
Sorry for the confusion, its not the original aokp. It's under android development section. Its not lgs rom though.
Click to expand...
Click to collapse
the alpha aosp or a different one?

scottshebs said:
the alpha aosp or a different one?
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Click to collapse
Lol no wonder... Yea my mistake AOSP.

ej_424 said:
Lol no wonder... Yea my mistake AOSP.
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Click to collapse
had me all excited there lol. youre running it without sound or vibration?