sim card works in another iPhone.his card does not work on my iPhone. but phone works occasionally with my sim card in it
i have a iphone 4. the phone works intermittently and can lose the signal at any time. i swapped the sim card with my other i phone and the first sim card works fine in the 4s but the sim from that phone still doesnt work as it should in the first phone.
iPhone 4, iOS 6.1.2
