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Bring your own phone or tablet to AT&T

Learn how to bring a compatible unlocked device to our network.

Quick AnswerQUICK TIP
Transfer your device to us
Check to see if your device is compatible with our network and order a new AT&T SIM card. You can also transfer your current number or get a new one.

Make sure your device is compatible

To work on our network, your device has to operate on one of these GSM frequencies:
  • 3G UMTS network: 850, 1900MHz bands
  • 4G LTE network: AWS, 700, 850, 1900MHz bands

Not sure which network frequencies your device supports? Check your device manufacturer’s website.
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Check device status

  • Make sure your device isn’t reported lost, stolen, or involved with fraud at
  • Confirm that your device is unlocked so we can activate it. Have a dual SIM device? Go to your current carrier’s or device manufacturer’s website to unlock your device first.
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Gather info to transfer your number

When you order a SIM card online, you can find out if you can transfer your current number to us. If you can transfer your number, have this info handy for checkout:
  • Account owner’s name and address
  • Account owner's Social Security number or tax ID
  • Current account number
  • PIN or password, if applicable
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