Unlock Straight Talk Iphone Hack. #1 unlocking via software (temporary) this is the first method that you can use to unlock straight talk iphone. A lot of iphone users use different ways to unlock their devices;
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Apple IPhone 4 8GB Black Straight Talk Smartphone
All of these ussd codes need to be entered via the phone app, and require the input of a handful of digits and characters followed by a tap on the call button. As kiltedtim posted, the only way to get an iphone permanently carrier unlocked is to ask the carrier it is locked to process an unlock for you.