Can I put my SIM card into a different iphone without being charged?

Okay so, all of my family is on AT&T and I currently have an iPhone 4S and my mother has an iPhone 5, AT&T. My mom is eligible for an upgrade and she's getting the iPhone 5S next … Show more

It won't cost you anything, but they will know. Your account information is tied to the SIM card, not the phone. Doesn't matter what phone it is in. You may have to call them and register the new phone to get it working properly, but it will at least make calls and texts just by changing the SIM.

It won't cost you anything, but they will know. Your account information is tied to the SIM card, not the phone. Doesn't matter what phone it is in. You may have to call them and register the new phone to get it working properly, but it will at least make calls and texts just by changing the SIM.

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