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How to change a replacement AT&T SIM card

Phone Not Working After Moving SIM Card Got a new phone? Want to switch between phones? No matter what the reason, changing out the SIM card and getting your phone working is very easy. Swap SIM card To swap a SIM, sign in to your myAT&T account to complete the following steps. If you’re

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 • Other Phones & Devices

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iPhone 4s to IPhone 5c

I have an iPhone 4S from AT&T and have brought an iPhone 5C AT&T from a friend. I want to transfer my number and data information from one to the other. How do I do this since I can't keep the same SIM card because they are two different sizes?

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 • Apple

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