How to Activate iPhones With AT&T SIM Cards


An iPhone provides users with the ability to make calls, use video chat through FaceTime and speak text commands to your iPhone using Siri. Activating the iPhone requires you to install the SIM card and connect your device to iTunes or alternatively, to follow the setup wizard on the actual iPhone. If you didn't purchase your iPhone online or are switching your SIM card to a different iPhone, visit an Apple Retail Store or AT&T Authorized Agent to activate your iPhone.

Activating your iPhone through iTunes

  • Insert the SIM tool or a thin paperclip into the small SIM card hole on the side of the iPhone to pop out the SIM card tray.

  • Place the SIM card into the tray and push the tray back into the iPhone.

  • Connect your iPhone to your computer using the provided USB connector cable.

  • Complete the prompts within iTunes to register your iPhone and SIM card. You must enter the serial number of your iPhone and provide some personal information.

Troubleshooting Activation Issues

  • Press and hold the "Sleep/Wake" button and swipe the "Slide to Power Off" slider from left to right. Hold the "Sleep/Wake" button again until you see the Apple logo to restart your iPhone.

  • Press and hold the "Sleep/Wake" and "Home" button for ten seconds or more until the Apple logo appears to reset your iPhone.

  • Disconnect your iPhone from the computer and follow the prompts in the setup wizard to activate your iPhone. Connect to a Wi-Fi network during the setup process if the cellular data connection doesn't work.

Tips & Warnings

  • Before arriving at an Apple Retail Store or other AT&T Authorized Agent, connect your iPhone to your computer and set up your Apple ID at home to save time and activate your iPhone more quickly in the store.
  • Information in this article applies to iOS 6. It may vary slightly or significantly with other versions or products.

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  • Photo Credit Justin Sullivan/Getty Images News/Getty Images
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