Network Unlock your ATT SGS3 for free (howto)
- Thread starter stewartsoda
- Start date
This method requires you to be on stock 4.1.1 in order to use the free unlock method. Newer versions of the dialler had the hidden menu options removed.
I was coming here to say just that. Hah.
Exactly. You must be on stock 4.1.1 in order to utilize this method.
Just flash back to that version, and then flash back to the current rom you are on now, or any other rom you prefer that is compatible with your phone. Simple. Good luck!
You can't flash back to completely stock 4.1.1 if your phone has ever had stock 4.3 or higher. Downgrading from a 4.3 or newer bootloader could brick the phone.
Oh right. I forgot about that. It slipped my mind because when I used this method to unlock my cell I was on 4.2.1.
Is there any way to unlock sim if you're on 4.3? Got a Galaxy SIII from a friend but her operator needs 3 weeks (!) to send out instructions for unlocking the phone.
Reference: http://xdaforums.com/showthread.php?t=2601396
Thanks!
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This only works if you are on the stock rom, 4.1.1 version with corresponding bootloader and modem. After that the menus change.
Although, there have been some reports of it working with 4.1.2 bootloader and 4.1.1 modem.
DO NOT downgrade to 4.1.1 if you are on 4.3 (MJB) or newer, you will brick your phone.
Tricky unlock even when you have the right unlock code
I confirm that these steps worked for me yesterday with the latest rooted AT&T 4.4.2 firmware and boot loader UCUFNJ1 as I also stated in http://xdaforums.com/galaxy-s3-att/...nj1-update-t2941792/post58661440#post58661440 ; (the standard process that AT&T emails out with the unlock code did not work for me). Note that you must have obtained the unlock code (aka from AT&T after meeting their criteria) as stated. For me the very first step, (a) took 20-30 sec to bring up the service menu and I even entered the code *#197328640# a second time while waiting since I thought it didn't go through. This process is also posted on AT&T's official forum.
I confirm that these steps worked for me yesterday with the latest rooted AT&T 4.4.2 firmware and boot loader UCUFNJ1 as I also stated in http://xdaforums.com/galaxy-s3-att/...nj1-update-t2941792/post58661440#post58661440 ; (the standard process that AT&T emails out with the unlock code did not work for me). Note that you must have obtained the unlock code (aka from AT&T after meeting their criteria) as stated. For me the very first step, (a) took 20-30 sec to bring up the service menu and I even entered the code *#197328640# a second time while waiting since I thought it didn't go through. This process is also posted on AT&T's official forum.
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FYI:
Now you can get an unlock code from AT&T for free even if you're not a customer. As long as your phone meets the unlock eligibility requirements, they'll send you a code to unlock.
Proof? I am not an AT&T customer, and have an unused i747 that I wanted to unlock. I filled out their request form on Friday, and just received my code 30 minutes ago! And voila, my i747 is now unlocked.
Info: http://www.androidpolice.com/2015/0...u-sim-unlock-your-phone-heres-the-fine-print/
Here's the AT&T page:
https://www.att.com/deviceunlock/#/
Enjoy!
Now you can get an unlock code from AT&T for free even if you're not a customer. As long as your phone meets the unlock eligibility requirements, they'll send you a code to unlock.
Proof? I am not an AT&T customer, and have an unused i747 that I wanted to unlock. I filled out their request form on Friday, and just received my code 30 minutes ago! And voila, my i747 is now unlocked.
Info: http://www.androidpolice.com/2015/0...u-sim-unlock-your-phone-heres-the-fine-print/
Here's the AT&T page:
https://www.att.com/deviceunlock/#/
Enjoy!
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12I just saw this on Reddit and tried it on my ATT SGS3. I used an old StarHub SIM I had laying around and it didn't ask for the unlock code, so I'm pretty sure it worked.
The instructions are for the GSM Note 2, but the author says it works for the GSM SGS3, too.
http://xdaforums.com/showpost.php?p=34661189&postcount=1
I think you have to be on a stock ROM to get it to work. I was running UCALH9, bone stock. Don't forget to thank the OP on the other thread!4FWIW, after following the steps if you do it again when you get to this point
" [3]Perso SHA256 OFF > (after choosing this option, wait about 30 seconds,"
You will get a screen saying no change. This would mean that it worked the first time and your phone is already unlocked. I've done 5 S3's and checked with different SIM cards and it worked every time, 3 of those I went back and tried the steps a second time and all three gave me the no change message. Sort if a confirmation that it worked if you don't have another SIM to try.
3 Bell S3s, 2 Telus S3s and tried on my S3 but got the no change right away as it was already unlocked when I bought it.3FYI:
Now you can get an unlock code from AT&T for free even if you're not a customer. As long as your phone meets the unlock eligibility requirements, they'll send you a code to unlock.
Proof? I am not an AT&T customer, and have an unused i747 that I wanted to unlock. I filled out their request form on Friday, and just received my code 30 minutes ago! And voila, my i747 is now unlocked.
Info: http://www.androidpolice.com/2015/0...u-sim-unlock-your-phone-heres-the-fine-print/
Here's the AT&T page:
https://www.att.com/deviceunlock/#/
Enjoy!2This method for unlocking your phone works perfectly after Jelly Bean update on Rogers sgs3.
Sent from my SGH-I747M1
I don't know. Since the SIM I had laying around was not a mini-SIM I had to chop it up, too. O_O
In theory you don't ever see the unlock prompt unless you insert a non-network SIM anyway, so I don't think there's any way to check without one.
