Use the sim card from a dead iPhone 4 in an unlocked iPhone 4?
My wife's AT&T iPhone 4 just stopped working while she was out of town (returning today). I have an unlocked AT&T iPhone 4 here at home. When she gets back, can we put the SIM card from her non-working phone in my unlocked phone, and can she then use the unlocked phone as if it were her original one?
Thanks for any information.
iPhone 4, iOS 6.0.1