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I was wondering since both the AT&T and Tmobile phones are the same I could possibly flash a stock firmware from AT&T on to my T-mobile SGS III and then use an AT&T sim? I'm trying to use an AT&T sim card. Thought this might be an alternative to unlocking the phone. thanks.
I doubt that it would work
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JoJo2211 said:
I was wondering since both the AT&T and Tmobile phones are the same I could possibly flash a stock firmware from AT&T on to my T-mobile SGS III and then use an AT&T sim? I'm trying to use an AT&T sim card. Thought this might be an alternative to unlocking the phone. thanks.
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no
Can you guys elaborate please.
NOooooo
JoJo2211 said:
Can you guys elaborate please.
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Just because you flash an att rom doesn't mean its gonna unlock the phone to use it on a different carrier. If you try that it will brick or crash. DON'T DO IT! Seriously, if you want to use it for another carrier you can request a subsidy unlock from Tmobile if you have an account in good standing every 90 days. If you bought it threw a third party try another method to get the device unlocked. Or if you bought it right out full price from Tmobile they can process the subsidy unlock request as well. Once you have your unlock code it should come with instructions or if not you can go to Tmobile.com support section for your phone the Samsung T999.
hucesar1017 said:
Just because you flash an att rom doesn't mean its gonna unlock the phone to use it on a different carrier. If you try that it will brick or crash. DON'T DO IT! Seriously, if you want to use it for another carrier you can request a subsidy unlock from Tmobile if you have an account in good standing every 90 days. If you bought it threw a third party try another method to get the device unlocked. Or if you bought it right out full price from Tmobile they can process the subsidy unlock request as well. Once you have your unlock code it should come with instructions or if not you can go to Tmobile.com support section for your phone the Samsung T999.
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I'm just curious why would it brick the phone? Both of these phones are the SAME hardware wise. Even under the IMEI sticker of my tmobile s3 it says i747..
Radios are different, kernel I believe is slightly different. Just not a good idea unless a dev specifically says its safe.
It also wont help with the unlock. Thats not ROM dependent.
Also, the phones are NOT the same. I don't know why some seem to think they must be the same. What are they basing this on? They are very similar yes, and perhaps the ROM from AT&T will work. I don't know. However, sometimes very similar phones may have some very important differences, like a kernel, radio, or one or more partition/s that may be offset by one perhaps because of some aforementioned reason. Or any combination of those. Don't assume the phones are identical because the Internet says so. If you are confident that the phones are in fact identical, then by all means, flash away. Just let us know how it turns out. It may work.
Do a "getprop" in terminal and you may note some very important differences in there, besides the device name/model, etc. Has anyone seen the ril.modem.board or crypto values from an AT&T SGSIII?
If the mount points are different, which they probably are, you copuld end uup with a very expensive paper weight unless you know how to make the needed changes to the updater-script, which you would have to hack to even flash the rom in the forst place because the ro.device props will be different.
Unlocking a phone has nothing to do with the ROM, most phones give you 10 chances to enter a correct unlock code until the phone it carrier locked with whatever carrier the phone is for.
The unlocking of the phone is usually hard flashed and if you exhaust all attempts, you have to send it in to get reflashed from the carrier.
T-Mobile will generally offer you a free unlock code after 60-90 days of a phone purchase, but that does not mean you can flash ATT on T-Mobile and vice versa.
They are on different bands and have different setups, if they were the same they would just have one phone for both carriers.
OP should try it for the lulz. Phones are SAME! XD
Chances are a repartitions flash in Odin would fix it, but i'm jot sure about that. It's just a bad idea.
Sent from my SGH-T999 using xda premium
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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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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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.
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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!
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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?
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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?
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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.
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
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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.
Hello folks, Ive lurked here for a while and gotten great info and am hoping to get some help here. I apologize if some of what Im asking is obvious to you folks but it isnt to me so here I am. I tried HoFo but got no help there.
Ive been using factory unlocked Sony Xperias for a while (Z, ZL, Z Ultra)so never had this issue before, but I have an HTC One M8 coming and unfortunately its ATT branded, though I bought it from a private seller and not ATT themselves. Im also grandfathered into unlimited data for many years now, and with my Sonys can turn on mobile hotspot anytime and use my data with ATT none the wiser. Now Im assuming since I was dumb enough to buy an ATT phone, I will be told to contact ATT once I pop in my SIM and try to turn on mobile hotspot, is this correct? If so, will unlocking the phone resolve this issue? As of now ATT has no idea Ive bought this phone, nor did they ever even recognize my Sonys because they never sold them, but since this is an ATT M8, Im assuming theyll know immediately what Im using, identify my plan and lock me out. Im hoping I can get around that.
I also imagine since its an ATT phone it will have all sorts of abilities locked out and a lot of fluff added in. How can I get the features unlocked? Is there anyway to buy a carrier branded phone and get it to be similar to one that was bought factory unlocked from the beginning and never branded?
Any help and advice would be appreciated and TIA
Ok, if I asked too much stuff there that was obvious to you but not me, can someone just please tell me if unlocking the bootloader will at least unlock the mobile hotspot function for me so I can turn it on?
Well, just unlocked, rooted, s-off and twrpd my first phone. What a b*tch, lol! But I had to learn one of these days. Sadly, still cant get the native or any other mobile hotspot app to work though. I saw a thread about a VZW M8 hack but still cant seem to find anything for this ATT thing. No one even willing to talk to me?
Muti007 said:
Well, just unlocked, rooted, s-off and twrpd my first phone. What a b*tch, lol! But I had to learn one of these days. Sadly, still cant get the native or any other mobile hotspot app to work though. I saw a thread about a VZW M8 hack but still cant seem to find anything for this ATT thing. No one even willing to talk to me?
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You can try wiFi Tether Router. Its in the play market but you have to pay $2.50 for it. Has worked for me. I don't think this app can be dectected by the carriers like ATT because it does't use the native hotspot of the phone.
Youll have to flash a custom rom that has this feature [email protected] and is debloated,xarrier build will block it and tell you to conract them.....
This is not going to help you at all, but I pay the extra $30 per month. I use up to 50GB of data each month tethering, and I want to make sure the my carrier doesn't block me.
So now that I've done my service by telling you to do the right thing, you use to be able to go in using SQLLite and turn off the checker. For VZW it was around line 149 - 160. Can't remember. I would think you could do that for AT&T. Maybe someone knows? Or maybe AT&T doesn't work like that any more, of maybe KK doesn't work like that any more.
I am in love with my Note 4 and don't want to replace it. I have stock AT&T Note 4 unlocked with all the AT&T apps and etc. and would like to enable hotspot without paying extra premium for that service to AT&T. I am travelling overseas this summer having it is a must for connectivity with my laptop. I have explored in following directions!
First rooting phone and then may find hotspot fix after that (not sure if something exists) but running 5.1.1, I don't think there is root available yet for me? I found several posts upon googling that it's not available. Even if I get it rooted, is there concrete solution to hotspot fix? I don't want to downgrade to 5.0.X? and then root as it's just too much hassle!
OR
Easiest fix right now seems I get rid of this phone and get International version (I believe modeled SM-N910H ?) And that should allow me enable hotspot out of box from settings menu? correct?
Also will TMobile version SM-N910T, if I buy unlocked, will it allow me to enable hotspot? Does TMobile put software restrictions like AT&T? I don't want to buy and resale and all that headache!
Please advice!
Thank you
Not a single reply please help!
Only thing I know you can do on the AT&T version is to get a family share plan on your AT&T service. Tethering is included in those plans, then enabled on the phone with the stock app. I use it without problems on mine.
That's all I've got.
csci1000 said:
I am in love with my Note 4 and don't want to replace it. I have stock AT&T Note 4 unlocked with all the AT&T apps and etc. and would like to enable hotspot without paying extra premium for that service to AT&T. I am travelling overseas this summer having it is a must for connectivity with my laptop. I have explored in following directions!
First rooting phone and then may find hotspot fix after that (not sure if something exists) but running 5.1.1, I don't think there is root available yet for me? I found several posts upon googling that it's not available. Even if I get it rooted, is there concrete solution to hotspot fix? I don't want to downgrade to 5.0.X? and then root as it's just too much hassle!
OR
Easiest fix right now seems I get rid of this phone and get International version (I believe modeled SM-N910H ?) And that should allow me enable hotspot out of box from settings menu? correct?
Also will TMobile version SM-N910T, if I buy unlocked, will it allow me to enable hotspot? Does TMobile put software restrictions like AT&T? I don't want to buy and resale and all that headache!
Please advice!
Thank you
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Today's software update enabled it. I know that much.
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