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Activate and use your device

Learn how to get your device up and running on our network. It can be one you bought from us or a compatible and unlocked device you already own.


Make sure your SIM card is inserted correctly

If you have wireless service:
  • Insert SIM card into your phone or device and restart it.
  • Place a test call or browse the web without using Wi-Fi®.
  • Choose one of the following if your call:
    • Went through or you can surf the web, you’re good to go.
    • Didn’t go through or you can’t surf the web, you have to activate your device.
Not sure how to insert your SIM card? Go to Device Support and pick your device. Then choose View All Solutions and Insert SIM Card.
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Set up and activate your device’s SIM card or eSIM

Activate your SIM card online

Make sure there’s a SIM card in your device before you try to sign it up on our network. It’s best to use the SIM card that came with your new device or order a new one.
  1. Go to activate your device.
  2. Select the option for AT&T WIRELESSSM or AT&T PREPAIDSM
  3. Enter the requested info and select Continue.
  4. Follow the prompts to finish.

If you have AT&T PREPAID and don’t want to activate online, call us at 800.901.9878.

Activate an eSIM if you have a dual-SIM device

Heads up: If you’re bringing a dual-SIM device to AT&T, an eSIM won’t transfer.

Have an AT&T PREPAID plan? Contact us to activate your eSIM.

For AT&T WIRELESS, make sure the eSIM is on an active wireless plan, then download it over Wi-Fi®.

  1. Go to your phone settings.
  2. Tap one of the following (what you see depends on the device):
    • AT&T Cellular Plan Ready to be Installedthen Continue
    • Cellular, then Add a Plan
Have a QR code printed on an AT&T eSIM card? Follow these steps.

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Transfer your phone’s info

It’s a snap to transfer your contacts, photos, and videos to your new phone.
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Quick answer

Can I set up a phone if I didn’t buy it from AT&T?

How do I know if my new device or SIM card works on the AT&T network?

How do I activate an eSIM for my iPhone XS and newer models?

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