Does rooting a custom rom unlock sim? - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

Hi my friend just won a Samsung galaxy s3 from Telus but he is on the fido network. Does rooting and flashing a custom rom unlock the phone so that he can use a fido sim card in the Telus phone?
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xChris76 said:
Hi my friend just won a Samsung galaxy s3 from Telus but he is on the fido network. Does rooting and flashing a custom rom unlock the phone so that he can use a fido sim card in the Telus phone?
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Nope.

No but,
Cellunlocker.net does
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Related

ATT Modem on Rogers S3

Could i use a ATT Modem on a Galaxy S3 from Rogers? I have try and i have a no SIM card error. Is it because my S3 its not unlock?
Some roms are based on rogers.. so id say ues
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At&t Galaxy Note 2 on T-mobile with T-mobile GN2 ROM?

Hi is it possible to flash a T-Mobile GN2 rom to At&t GN2 and use it on T-Mobile network? The phone is already unlocked.
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AT&T Note 2 on T-mobile 3G/4G?
samomamo said:
Hi is it possible to flash a T-Mobile GN2 rom to At&t GN2 and use it on T-Mobile network? The phone is already unlocked.
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Did you find an answer to your question? I am wondering about the same thing

T-Mobile T999 GS3

I have a T-Mobile T-999 GS111
I'm having it unlocked was wondering is I could use my us cellular Motorola defy m simcard on my gs3
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sean19661 said:
I have a T-Mobile T-999 GS111
I'm having it unlocked was wondering is I could use my us cellular Motorola defy m simcard on my gs3
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Yes, if the phone is SIM unlocked, that will work.

AT&T Note 2 on Tmobile help rooting & roms

I have searched and haven't really found a complete Ambar to all my questions. I have an unlocked AT&T Note 2 being used on Tmobile. How do I root it and keep it unlocked do I use the AT&T root or Tmobile root and do I use AT&T ROMS or T-mobile roms? Thank you.
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Since it's the at&t version, you use all of the at&t tools and ROMs
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Will I lose my unlock for tmobile? I bought the phone unlocked already so I dont have a code or anything. Thanks
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No you will not lose your unlock privilege and you can use tmobile rom or att rom and use the att tools to root your phone
Thank you very much.
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[Q] Unlocking an AT&T s3 for use with a T-Mobile sim.

My dad got a galaxy s 3 from AT&T and he wants to use it with a T-Mobile sim card. Should he have AT&T unlock it or will installing cyanogenmod 10.2 work?
Try this..... did it to my S3 & S4
IceTwig said:
I'm also on MF3 w/ SafeStrap using STOCK ROM (SGH-i337) and this "Region Lock" by chainfire unlocked my SIM. I can now use a T-Mobile SIM and its recognized fine.
Region Lock Away
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https://www.att.com/deviceunlock/client/en_US/
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Follow this guide. It's free and easy. You do have to be on a Touchwiz based Rom.
http://forum.xda-developers.com/showthread.php?t=2176719

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