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imAmac23

macrumors newbie
Original poster
Jul 8, 2012
10
0
Having a problem trying to revert my(GSM) iphone 4s back to ATAT ...Its currently running sprint updated to 6.1.3 with firmware 3.4.03

Is it possible? ....would like to know ASAP thanks!:D
 

PsstGreek

macrumors 68040
Oct 21, 2010
3,776
59
Tampa Bay
Having a problem trying to revert my(GSM) iphone 4s back to ATAT ...Its currently running sprint updated to 6.1.3 with firmware 3.4.03

Is it possible? ....would like to know ASAP thanks!:D

A Sprint iPhone 4S can't be used on AT&T unless you're using a turbo sim.
 

elementary

macrumors newbie
Jul 3, 2012
9
0
Nope.

Your phone is GSM, but Sprint locks it just as Verizon does to prevent domestic US use on T-Mobile/AT&T.

There is no known way to circumvent the domestic unlock: third-party unlocks and the carrier's official unlocks only work for international GSM.

You're welcome to try novel methods like bizarre trick SIMs.

A more legitimate method is the TruPhone SIM, which would actually let you roam onto AT&T with a Sprint iPhone — the roaming rate is more than a normal dataplan ($30 for 200MB), but it's still far better than other international roaming rates.
 

FlyUnlock.com

macrumors member
Jul 2, 2013
78
0
Please also keep in mind that some of the carriers are CDMA while others are GSM. That might be a reason for inability to switch between them.
 

imAmac23

macrumors newbie
Original poster
Jul 8, 2012
10
0
Thank you guys for the help really saved me some time and money
 
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