I've had an iphone 4s since last July and all of a sudden, my headphones stopped working. I found out that it wasn't my headphones, but it was the jack where you plug in the headphones! I have an old iphone 4s that is not being used but the power button doesnt work on it. Can anyone tell me how I can transfer my sim card into the old phone? Or do I have to go to an AT&T store to get a new phone or go back to another Iphone 4s?
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