Sim Unlock - Galaxy S III Mini Q&A, Help & Troubleshooting

I have a friends ATT Galaxy sm-g730a running 4.2.2
3.4.0.-1299773
It is rooted and I am trying to sim unlock. he has ATT and I want to put on T-Mobile.
Everything I see it calls for a paid app. Am I missing something?
Thanks in advance.

Related

[Q] Help Unlocking ATT (N900A) to Tmobile

Hi guys, I recently traded my Oppo find 5 for a AT&T note 3.
The Find 5 was unlocked and I was using Tmobile. Although the Note 3 is locked to ATT.
I tried using these threads to unlock:
http://forum.xda-developers.com/showthread.php?t=2494634
http://forum.xda-developers.com/showthread.php?t=2475552
the only difference is I used an app called Kingo to root. I also dont have the original ATT sim card that came with the phone, I used an old one I had laying around.
Other then that everything seemed to have gone smoothly. Except after I reboot the phone after the region unlock it says "invalid SIM" and asks for a sim unlock code.
Could you guys help me figure this out? I thought it would be a lot smoother and this is my only phone.
Thanks!
You must have the latest software update. If so your baseband version ends with "mj5".
The 2 threads about unlocking you posted worked on baseband version "mi9" only.
You have to buy an unlock code now.
Sorry!

[Q] A question about unlocking

Hey guys. I just received a T599n, which is the s3 mini on the metropcs network. My plan is T-Mobile and i wanted to know how I can unlock this phone to work with my T-Mobile sim card without paying or if it is possible to install an international rom on this device which will allow it to be unlocked, maybe? Sorry for being nooby.

[Q] Switching to AT&T

Hey,
I just recently moved to the USA and I am trying to set up my Note 3 to work with AT&T but I'm not sure how to do that.
The phone I currently have is a Rogers Galaxy Note 3 N900W8 (Already knox 0x1), and I'm curious what I need to do to make it work with my AT&T sim card.
I was hoping to stick to ViSiOn-X but from what I can see that is not available for AT&T, so I'll probably just stick with the stock ROM, whichever that is.
Though, I do still have a phone plan in Canada and would like to switch between the sim cards so that I can check my voicemail if at all possible.
Is it possible to set up my phone to work with both Rogers Canada and AT&T USA? Or am I required to purchase a factory unlocked phone to do that?
If it is possible, how?
BlameHoffmann said:
Hey,
I just recently moved to the USA and I am trying to set up my Note 3 to work with AT&T but I'm not sure how to do that.
The phone I currently have is a Rogers Galaxy Note 3 N900W8 (Already knox 0x1), and I'm curious what I need to do to make it work with my AT&T sim card.
I was hoping to stick to ViSiOn-X but from what I can see that is not available for AT&T, so I'll probably just stick with the stock ROM, whichever that is.
Though, I do still have a phone plan in Canada and would like to switch between the sim cards so that I can check my voicemail if at all possible.
Is it possible to set up my phone to work with both Rogers Canada and AT&T USA? Or am I required to purchase a factory unlocked phone to do that?
If it is possible, how?
Click to expand...
Click to collapse
You need a factory unlock so you can switch carriers now as for the rom I'm not sure if the rom will work on AT&T, you should check the rom forum an see if other AT&T users used it an if don't already know the Model for AT&T is SM-N900A, also you could always try the rom once you get an sim unlock, an try it with that rom but if it don't work flash a rom that you kno will work
nemopsp said:
You need a factory unlock so you can switch carriers now as for the rom I'm not sure if the rom will work on AT&T, you should check the rom forum an see if other AT&T users used it an if don't already know the Model for AT&T is SM-N900A, also you could always try the rom once you get an sim unlock, an try it with that rom but if it don't work flash a rom that you kno will work
Click to expand...
Click to collapse
Ive got my phone unlocked now, but I think there may be some issues with the ROM. When I first unlocked it I was getting the 4G connection to AT&T. Now I just have the regular phone connection, no 4G. Data is on.

Question for tombile s6 to att service

My question is does the Tmobile phone have to be unlocked to work on the ATT network???
Can I just put my att sim card for this to work??
Someone help please and thanks!!
Yes the phone will need to be sim unlocked for it to be used on the ATT network.

Ello ladies and gents. Had to switch from tmobile to att and

I can call out and text but only have 4g signal and incoming calls are going straight to voicemail.
So do I need to flash an att rom now? For it to work right?
Cause I still am running tmobile custom rom.
Thanks in advance.
Wow , may it be a possibility that im boned? I just checked att note 4 android dev and theres nothing that works due to bootloader being locked.
Looks like root was never achieved . So im stuck with tmobile rom on att network. :/ this is horrible.
You cant unlock ATT device bootloaders?
Least I was factory unlocked ....
According to this thread you shouldn't have any problems.

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