I currently have a Galaxy S3, running rooted stock ICS for Tmobile - and I would like to switch over to ATT and keep the same phone, just flash the ATT JB stock firmware onto it (or a custom ROM), and whatever other flashes may be needed to make it work, or something along those lines. Is this even possible?
The only reason I would think it could work is that they are both GSM phones so the tech should essentially be the same right? And since it's rooted, switching the SIM shouldn't be an issue either, as I have done so when I am travelling.
Or are there other major diffs between the 2 s3's that I am missing which make this an impossible.
I have a friend who is looking to buy a new S3 from ATT, and I would just as soon sell him mine with their stock stuff on there if they are basically the same.
Many thanks in advance to any who can help shed light on this.
U have complete wrong idea brother. You cant just flash att s 3 rom on tmobile s 3.
Find some att based rom for tmobile s3 . i think we have some.
Its almost same hardware but not same network antenna. So you cant run att 4g on it.
Simply dont flash att rom on it unless its says for tmobile.
bikrame said:
U have complete wrong idea brother. You cant just flash att s 3 rom on tmobile s 3.
Find some att based rom for tmobile s3 . i think we have some.
Its almost same hardware but not same network antenna. So you cant run att 4g on it.
Simply dont flash att rom on it unless its says for tmobile.
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Click to collapse
I always thought that Tmo (i was actually told this by tech support once) shares antennas/repeaters with ATT... so I guess they are just piping the 4G through a diff frequency or something, and the antenna isn't tuned to pick it up. damn.
are there any carriers it WILL work with?
mikewikkid said:
I always thought that Tmo (i was actually told this by tech support once) shares antennas/repeaters with ATT... so I guess they are just piping the 4G through a diff frequency or something, and the antenna isn't tuned to pick it up. damn.
are there any carriers it WILL work with?
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Click to collapse
The T999 supports at&t's 3G, just not their LTE (T999 doesn't support LTE period).
What was being told to you is don't flash an at&t baseband (radio), recovery, or full ROM to the phone or you risk a brick. Any of the ROMs marked *AROMA* have multi-carrier compatibility, you just choose the underlying device.
mikewikkid said:
I currently have a Galaxy S3, running rooted stock ICS for Tmobile - and I would like to switch over to ATT and keep the same phone, just flash the ATT JB stock firmware onto it (or a custom ROM), and whatever other flashes may be needed to make it work, or something along those lines. Is this even possible?
The only reason I would think it could work is that they are both GSM phones so the tech should essentially be the same right? And since it's rooted, switching the SIM shouldn't be an issue either, as I have done so when I am travelling.
Or are there other major diffs between the 2 s3's that I am missing which make this an impossible.
I have a friend who is looking to buy a new S3 from ATT, and I would just as soon sell him mine with their stock stuff on there if they are basically the same.
Many thanks in advance to any who can help shed light on this.
Click to expand...
Click to collapse
Sorry to say, but you are forgetting something, a stock rooted Tmobile Galaxy S3
is not compatible with the AT&T services as well as any of the AT&T roms.
You would need to UNLOCK the phone first before doing anything else.
Good Luck!
Thread belongs in Q&A, reported.
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Misterjunky said:
Sorry to say, but you are forgetting something, a stock rooted Tmobile Galaxy S3
is not compatible with the AT&T services as well as any of the AT&T roms.
You would need to UNLOCK the phone first before doing anything else.
Good Luck!
Click to expand...
Click to collapse
pardon my ignorance, but what is the diff between unlocking and rooting, and how can I go about doing it? Also, and this is an aside, the only way that i can find to change the IMEI of a T999 is by using an external box - there is no software-only method of doing this yet, correct?
re: unlocking
mikewikkid said:
pardon my ignorance, but what is the diff between unlocking and rooting, and how can I go about doing it? Also, and this is an aside, the only way that i can find to change the IMEI of a T999 is by using an external box - there is no software-only method of doing this yet, correct?
Click to expand...
Click to collapse
To put it into simple terms,
Rooting a phone allows YOU to make changes to the phone which includes flashing roms as well as
allowing apps which require root access to work on your phone which are available at the play store.
But rooting has nothing to do with AT&T or any other carriers.
Unlocking a phone allows the phone to communicate with different carriers like AT&T and others.
Your phone does not need to be rooted to work with different carriers, it only needs to be Unlocked.
Also once the phone is unlocked you would need a AT&T Sim card for it to work.
Even an Unlocked Galaxy S3 will not work on AT&T unless you have a AT&T sim card.
There is absolutely no reason to change IMEI.
If you want to find out more about Unlocking, here is a link: https://www.google.com/search?q=unl...96,d.cGE&fp=db8d96ed93be75f0&biw=1017&bih=490
Check out the videos and articles.
Good Luck with the phone.
mikewikkid said:
pardon my ignorance, but what is the diff between unlocking and rooting, and how can I go about doing it? Also, and this is an aside, the only way that i can find to change the IMEI of a T999 is by using an external box - there is no software-only method of doing this yet, correct?
Click to expand...
Click to collapse
This is what you need, a SIM Unlock - and it happens to be rather easy on the S3.
http://forum.xda-developers.com/showthread.php?t=2023709 :good:
they are right. you need to unlock your phone. if you go into a store or call customer care they should be able to help you out with unlocking it. i used to work for tmobile and i remember unlocking a few peoples phones.
Hi all -
Yes I am new here, but I have used this site for quite some time and haven't really been able to figure out the answer so here goes. I have a T-Mobile T889 Note 2 but I have ATT service. While I get service here at my house with the MB4 baseband, as soon as I leave and go anywhere, I lose signal where I would have it if I had an ATT version of this phone. In short, my actual signal stinks. My phone is unlocked, rooted, and I have run many different roms and tried modem zip files to no avail, only getting boot loops. I have tried the *#197328640# as well.
My question is: Is it possible to turn this T889 into a i317 ATT version so I can get better signal? Or am I just up a creek? There has to be a way to get a ATT modem to actually work.
Please, any help would be great, and thanks so much for all the input all of you have.
Update!
pmt223 said:
Hi all -
Yes I am new here, but I have used this site for quite some time and haven't really been able to figure out the answer so here goes. I have a T-Mobile T889 Note 2 but I have ATT service. While I get service here at my house with the MB4 baseband, as soon as I leave and go anywhere, I lose signal where I would have it if I had an ATT version of this phone. In short, my actual signal stinks. My phone is unlocked, rooted, and I have run many different roms and tried modem zip files to no avail, only getting boot loops. I have tried the *#197328640# as well.
My question is: Is it possible to turn this T889 into a i317 ATT version so I can get better signal? Or am I just up a creek? There has to be a way to get a ATT modem to actually work.
Please, any help would be great, and thanks so much for all the input all of you have.
Click to expand...
Click to collapse
Hope this helps anyone with issues on their phone...Contacted Samsung Support about my terrible radio/signal issues (going through T-Mobile was ridiculous, as I could not find the receipt, but the phone is still within its warranty period anyway). Samsung sent me a UPS label to ship the phone back. Flashed the phone back to stock and rolled the counter back to 0 using the tuts on here. Took about a week or so, but looks like they replaced two components on the phone after finding the following: NO PCS SERVICE - WILL NOT CHARGE - SIM ELECTRICAL FAILURE. Two components were replaced (not detailed as to what though). Samsung is sending the phone back to me now, no cost to me and no need for receipt either (since the phone hasnt even been on the market for a year, so it is def within warranty). So while many of us might find some issue with our phone and we continuously looks for different ways of tweaking or whatever, sometimes it's actual issues with the hardware that may need replacing.
Thanks all!
No one has a clue why Sprint can't see serial number & can't activate it. It was Demo phone never activated for use.
ESN ready for activation!
SAMSUNG L900 SILVER (SPHL900GYS)
version 4.3
1. I tried some forenic software & I did see GSM in the settings. But under phone Device details it says CDMA-eHRPD.
2. If my 14yo kid playing around it unlock it with a bad code before it was activated have screwed it up and changed setting to GSM?
3. Would flashing &/or rooting return it to normal, if the problem is it was set/changed to GSM & not CDMA?
4. Could it be flashed to another mvo but since it hasn't been activated with Sprint first, would that make a difference?
I already spent a couple of weeks searching google, this & other forums & couldn't find a similar situation. Contacted everyone possible at Sprint support. Their solution was take it to a Sprint repair store, which is a 3 hour drive. Just to see if it was ever flashed which it wasn't. I guess I'll do the store if I can't get help here. I was hoping just some simple setting changes might fix it.
Can anyone please help with this problem or give options?
If your phone is in fact a Sprint branded phone then yes you can activate it on the Sprint network. I assume the esn and meid numbers are attached on the back of the phone beneath the battery. If so then all you will need to do is flash the stock Sprint rom on your phone using odin. I would first get your phone back to factory condition and verify everything works by visiting this thread...
http://forum.xda-developers.com/showthread.php?t=2591898
Follow the instructions to get your phone back to original out of box condition. Good luck.
Ok. I have l900 with a busted antenna connection on the board. That little title popped off so easy I can't believe it. I have another l900 I can not for the life of me get to connect to dfs. Can I just pull the daughter board from this one and put it on that one like swapping a cdma sim? If not why the heck won't my l900 connect to dfs? Changed out a working usb used in another phone and still no go. Ljc to ne2. Still no dfs reading. I can connectto the port just fine but searches pphone for ever.i even went stock and let ota take me to ne2. Still no go. Mc2 stock count reset still no go. 4.3 no go. Sec is all 000000. Idk wtf. Already put that l900 on boost mobile but no sprint here. Only option may be to get an electronics shop to replace the connection. Idk wtf. Help me to get my l900 connected to dfs like this busted l900 does and I won't worry about anything.
Will the walmart CDMA activation kit work on the Sprint E4GT? I checked the website with the MEID and it says its compatible but I want to be certain and get some verification first. Or is there a way to flash it to straight talk that doesn't involve cloning? I would appreciate any information that will bring some clarity, I can't find anything specific enough to say either way.