[Q] Unlocked AT&T S3 on t-mobile - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

I have an unlocked AT&T S3 thats on tmobiles network my question is should i be using tmobile roms or at&t roms to flash to the phone

You can use t mobile or at&t ROMs and shouldn't have any problems. If any arise, stock with at&t ROMs and add the correct APN settings

im on simplemobile which is a tmobile company...
im using stock att, without any problems... I haven't tried any tmobile roms... the apns are fixed automatically...

thanks for the info

mdiaz33685 said:
im on simplemobile which is a tmobile company...
im using stock att, without any problems... I haven't tried any tmobile roms... the apns are fixed automatically...
Click to expand...
Click to collapse
And are you getting 4G?
What's the speeds your getting?

Related

Tmobile note 2 with ATT service

Hey guys... so I switched to ATT a few days ago and am wondering if I should be using ATT roms or tmobile roms or if it does not matter? I have a tmobile note 2 rooted using ATT service. If I can just use ATT or tmobile roms is there any difference( one being better) or do I have to do anything else to the phone to get the best service?
bump
T-Mobile ROMs.
BlackPhantomX said:
T-Mobile ROMs.
Click to expand...
Click to collapse
will the radio and everything work fine with att

[Q] ATT Samsung Galaxy S3 Tmobile Sim

Hello everybody, I am currently planning on coming to Tmobile from Att and I have a unlocked Samsung Galaxy S3 from ATT. I know it will work in terms of service, but my question is when I come to flash roms, would I flash them from the Tmobile section of XDA? Or the ATT section of XDA?
The phone originally being ATT with Tmobile Sim card was really throwing me off and I didn't want to do any thing stupid.
Thank you so much for your time.
sg3love said:
Hello everybody, I am currently planning on coming to Tmobile from Att and I have a unlocked Samsung Galaxy S3 from ATT. I know it will work in terms of service, but my question is when I come to flash roms, would I flash them from the Tmobile section of XDA? Or the ATT section of XDA?
The phone originally being ATT with Tmobile Sim card was really throwing me off and I didn't want to do any thing stupid.
Thank you so much for your time.
Click to expand...
Click to collapse
T-Mobile phone - > T-Mobile threads
Sent from my Nexus 4 using xda premium
LuigiBull23 said:
T-Mobile phone - > T-Mobile threads
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Ok got it, thank you.
So it doesn't matter that my carrier will be Tmobile, I should still use Att threads and not have a problem?:good:
sg3love said:
Ok got it, thank you.
So it doesn't matter that my carrier will be Tmobile, I should still use Att threads and not have a problem?:good:
Click to expand...
Click to collapse
Correct.
|When Emotion Goes up, Logic Goes Down|
sg3love said:
Ok got it, thank you.
So it doesn't matter that my carrier will be Tmobile, I should still use Att threads and not have a problem?:good:
Click to expand...
Click to collapse
You got it bro. You are absolutely correct.
Sent from my Nexus 4 using xda premium
re: differences
sg3love said:
Hello everybody, I am currently planning on coming to Tmobile from Att and I have a unlocked Samsung Galaxy S3 from ATT. I know it will work in terms of service, but my question is when I come to flash roms, would I flash them from the Tmobile section of XDA? Or the ATT section of XDA?
The phone originally being ATT with Tmobile Sim card was really throwing me off and I didn't want to do any thing stupid.
Thank you so much for your time.
Click to expand...
Click to collapse
After inserting a Tmobile sim card into your UNLOCKED phone you will be able to flash
any of the roms here in the Tmobile thread as well as in the AT&T thread.
If you flash a AT&T rom the only thing you need to do to make it work properly is to
change the APN (Access Point settings) in the phone to be "T-Mobile US".
The phone can do that automatically by going into:
Settings>more settings>mobile networks>Network operators>Select automatically and select "select automatically"
and it will find that you have a Tmobile sim and it will change the apn to reflect that.
The phone will work just fine either way, however there is one main difference between
the roms found in the AT&T thread and this Tmobile thread.
The difference is when using Tmobile roms which are not ported from other carriers you
will have built-in wifi calling as an option when using the Tmobile roms.
Other than that you will not notice much of any difference at all.
Good Luck!
I bought a new SS S3 and ordered it for Tmobil network, but instead recieved a ATT phone...
SGH-I747
Everything works fine, and its not unlocked that I know of, but the whole reason I bought the phone was to use the wifi calling option of T-mobil, this att phone doesnt have that option.
Am I screwed? Should I send it back for a t-mobil phone or is there a simple way to update this phone to T-mobil and get the option of wifi calling from T-mobil.?
robomas1 said:
I bought a new SS S3 and ordered it for Tmobil network, but instead recieved a ATT phone...
SGH-I747
Everything works fine, and its not unlocked that I know of, but the whole reason I bought the phone was to use the wifi calling option of T-mobil, this att phone doesnt have that option.
Am I screwed? Should I send it back for a t-mobil phone or is there a simple way to update this phone to T-mobil and get the option of wifi calling from T-mobil.?
Click to expand...
Click to collapse
Hey robomas1. Would you be interested in trading your AT&T s3 for a brand new T-Mobile s3? I have a similar situation as yourself and got a T-Mobile version galaxy s3 but I wanted an AT&T phone as that's what carrier I use.
Let me know. Thanks.
re: flashing
sg3love said:
Hello everybody, I am currently planning on coming to Tmobile from Att and I have a unlocked Samsung Galaxy S3 from ATT. I know it will work in terms of service, but my question is when I come to flash roms, would I flash them from the Tmobile section of XDA? Or the ATT section of XDA?
The phone originally being ATT with Tmobile Sim card was really throwing me off and I didn't want to do any thing stupid.
Thank you so much for your time.
Click to expand...
Click to collapse
When you are flashing any custom roms after you get your Tmobile sim chip you should flash the
Tmobile Touchwiz Jellybean 4.1.2 custom roms for the very best results.
If you do flash an AT&T cwm/twrp flashable custom rom you will find that even though the phone will
work fine you will loose the free Wifi calling feature in the phone if it's not flashed with a tmobile rom.
Flashing the official Odin flash Tmobile firmware on an AT&T phone even if it's unlocked and rooted will
cause the phone not to be able to make or receive any phone calls.
The reason for this is that all the official Tmobile Samsung Odin flash firmware contain a modem/radio image which
is not compatible with an AT&T phone even if it's unlocked and rooted but none of the Tmobile or AT&T CWM/TWRP
flashable stock or custom roms contain the modem/radio image file which means you can flash them without any issues.
Good luck!
Trade ATT
hbkalel said:
Hey robomas1. Would you be interested in trading your AT&T s3 for a brand new T-Mobile s3? I have a similar situation as yourself and got a T-Mobile version galaxy s3 but I wanted an AT&T phone as that's what carrier I use.
Let me know. Thanks.
Click to expand...
Click to collapse
I have a brand new in the box Samsung Galaxy S3 from ATT and I am willing to trade for a T-Mobile.
li2le said:
I have a brand new in the box Samsung Galaxy S3 from ATT and I am willing to trade for a T-Mobile.
Click to expand...
Click to collapse
Pm sent
I will trade
li2le said:
I have a brand new in the box Samsung Galaxy S3 from ATT and I am willing to trade for a T-Mobile.
Click to expand...
Click to collapse
I still trade phones
It should go without saying but be very wary of someone who registered an account just to try to trade phones... There's a reason there's a big Swappa logo up above the site navigation bar...
hbkalel said:
Hey robomas1. Would you be interested in trading your AT&T s3 for a brand new T-Mobile s3? I have a similar situation as yourself and got a T-Mobile version galaxy s3 but I wanted an AT&T phone as that's what carrier I use.
Let me know. Thanks.
Click to expand...
Click to collapse
Hi, I have a brand new AT&T S3 and need a T-Mobile S3.
So you still have the T-Mobile Phone?
If Interested, let me know.
thanks
mustang123 said:
Hi, I have a brand new AT&T S3 and need a T-Mobile S3.
So you still have the T-Mobile Phone?
If Interested, let me know.
thanks
Click to expand...
Click to collapse
I sent you a pm.
As far as just joining to trade phones, I am genuine. I read the forums regularly and finally joined. This forum helped me to unlock my T-Mobile galaxy s3. However, using the tmobile phone, I can't run the update, as the unlock does not hold after and my AT&T sim no longer works.
That's my reasoning for wanting to trade for an AT&T galaxy s3.
hbkalel said:
I sent you a pm.
As far as just joining to trade phones, I am genuine. I read the forums regularly and finally joined. This forum helped me to unlock my T-Mobile galaxy s3. However, using the tmobile phone, I can't run the update, as the unlock does not hold after and my AT&T sim no longer works.
That's my reasoning for wanting to trade for an AT&T galaxy s3.
Click to expand...
Click to collapse
Just curious, what do you mean the unlock doesn't hold? Once unlocked it should remain so whether you flash a rom, firmware, mod, etc.
Sent from my SGH-T999 using xda premium
DocHoliday77 said:
Just curious, what do you mean the unlock doesn't hold? Once unlocked it should remain so whether you flash a rom, firmware, mod, etc.
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
Well I had to flash back to stock rom to unlock the phone. I have avoided running the network update, guess was afraid that it wouldn't work. I really didn't want to have to flash it again and have to unlock it and be back where I started. So it should be fine to update, should cause no issues amd run fine with AT&T sim still?
Thats what you're saying right?
Thanks for info.
As I understand it, that is correct. Once its unlocked, you can Odin flash firmware, recovery flash roms, flash modems, etc.
If it helps, Ive never seen a single thread or question where someone was relocked.
Sent from my SGH-T999 using xda premium
DocHoliday77 said:
As I understand it, that is correct. Once its unlocked, you can Odin flash firmware, recovery flash roms, flash modems, etc.
If it helps, Ive never seen a single thread or question where someone was relocked.
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
Alright. I will go ahead and run the network update then. The notification doesn't go away. It is annoying!
Haha. I'll post back. I'd rather not have to trade if it works fine. Other than the annoying notification, the phone operates wonderfully.
If i flash the tmobile s3 rom on my att s3 will i get the 1700mhz band? I thought an att s3 on tmobile will only get 2g/edge service. Please let me know if someone knows.
Thanks A Lot,
Yasir Faheem

[Q] ATT LTE on Tmobile Note 2 HELP!

Is it possible to get ATT LTE on tmobile note 2? I have unlocked tmobile note 2 with ATT sim..im getting 4g but unable to get LTE. i tried switching my data plan, even got the lte sim from att store. Im on a cfw clear rom ace with persues kernel. Any help would be appreciated!
gpathak said:
Is it possible to get ATT LTE on tmobile note 2? I have unlocked tmobile note 2 with ATT sim..im getting 4g but unable to get LTE. i tried switching my data plan, even got the lte sim from att store. Im on a cfw clear rom ace with persues kernel. Any help would be appreciated!
Click to expand...
Click to collapse
I can't say anything scientific or definite, but I just did this last night. I flashed the latest tmobile radio and the Novella Dos AT&T rom and it just worked.
Don't think so they are on different frequency
Sent from my SGH-T889 using xda premium
rquinn19 said:
I can't say anything scientific or definite, but I just did this last night. I flashed the latest tmobile radio and the Novella Dos AT&T rom and it just worked.
Click to expand...
Click to collapse
Really? If you did thats very interesting... maybe the new radio and rom opened the phone to at&ts lte bands.
mysteryAK89 said:
Really? If you did thats very interesting... maybe the new radio and rom opened the phone to at&ts lte bands.
Click to expand...
Click to collapse
I intially tried the ATT radio but it bootlooped. So I know for sure it was a the Tmo radio
rquinn19 said:
I intially tried the ATT radio but it bootlooped. So I know for sure it was a the Tmo radio
Click to expand...
Click to collapse
Do you have a link for the radio? I would like to flash it because my t889 wont get a 4g lte signal either.
You think it would work without the at&t rom?
This may be of help for you guys. It was designed to use att phone on tmo, but it's a combined mod in that it enables att bands on our phone
http://forum.xda-developers.com/showthread.php?p=35933247
Sent from my SGH-T889 using xda app-developers app

[Q] help !! please att data not working on t-mobile 999

ok is there a rom that work right out the box for some sort of data with my prepaid at&t sim card i can make calls get mms, but cant get data i really need some sort of data working today i am rooted, unlocked and have no idea if i should be useing some sort of at&t kernal, or just changeing the apn, which has not worked yet?
can some one please direct me to the right thread or something
So you have a Tmobile T999 with an ATT prepaid sim?
I don't remember for sure so hopefully someone else can confirm, but I don't think the T999 can get better than 3g on ATTs network.
But if you're using the ATT sim, you'll be on their network so you may need to either unlock the phone and/or put in the correct ATT apn.
Sent from my SGH-T999L using xda premium
It will use HSPA on At&t no problem. Sounds like an APN issue. Your best bet is to go to the At&t forum and flash an At&t rom. Just make sure not to flash an At&t radio. Data should work out of the box on an At&t build.
Sent from my SGH-T999 using Tapatalk 4 Beta
I think it will use HSPA+ but only difference is that att hspa+ is not 42mg like on tmobile. I was getting around 7mg with my friends att sim on my t999.
Sent from my Galaxy Nexus using Tapatalk 4 Beta
gypsy214 said:
I think it will use HSPA+ but only difference is that att hspa+ is not 42mg like on tmobile. I was getting around 7mg with my friends att sim on my t999.
Sent from my Galaxy Nexus using Tapatalk 4 Beta
Click to expand...
Click to collapse
This is correct. at&t uses the older HSDPA 7/14 and HSPA 21 depending on where you are located. They opted to go to LTE instead of a dual carrier configuration for their HSPA+
What service do you have with the prepaid att service? Did you have to get a new sim card? I looked everywhere on here, but didn't see anything

[Q] Unlocked ATT S3, switched to Spanish carrier, still safe to root?

I had my phone unlocked through ATT's service, and I'm currently using a SIM from Tuenti, which piggybacks off of Movistar's network. Do I still use the ATT images to root my phone, or will this screw up my cell coverage?
Thanks,
Victor
If you are using an AT&T branded S3 then use only d2att ROM's.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
vcuauhtemoc said:
I had my phone unlocked through ATT's service, and I'm currently using a SIM from Tuenti, which piggybacks off of Movistar's network. Do I still use the ATT images to root my phone, or will this screw up my cell coverage?
Thanks,
Victor
Click to expand...
Click to collapse
USE D2ATT roms. You might have to put in a custom APN to get mobile data.

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