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AT&T NumberSync

AT&T NumberSync

Use one mobile number across multiple devices to send and receive texts, make and receive calls, and more.



  1. With AT&T NumberSync™, once you sync devices to your mobile number, you can make and receive voice or video calls from whatever device you choose. Video calls require an AT&T Video Call-capable smartphone. Your smartphone number will display on the call recipient's caller ID. Select the Phone icon from the home screen.
    Note: Visit Learn how to use NumberSync for Android tablets for more information.
  2. Select OK.
  3. You will be directed to the NumberSync setup page. On the login screen, enter your myAT&T User ID and Password for the smartphone mobile number you would like to sync with your tablet, then select Continue.
    Note: A text message will be sent to the number linked with your User ID. Reply with the provided code word to complete the log in process. Visit Set up NumberSync for Android tablets for details.
  4. Select your Current address or select Add New Address and then select NEXT. Select YES to confirm your address.
  5. Enter your Device name then select NEXT.
    Note: You will be prompted to review and accept Permissions to continue using AT&T NumberSync.
  6. When NumberSync is activated, "Logged in with AT&T Number Sync" will appear towards the top of the dialpad screen in the Phone app.
    Note: For information on making and receiving voice and video calls, see the Make & Receive a Call and Make & Receive an AT&T Video Call tutorials.
  7. To log out of NumberSync, select the Menu icon then select NumberSync settings.
  8. Select Log out.
  9. Certain restrictions, requirements or limitations may apply for this feature/service. For more details, visit https://www.att.com/features/numbersync/.

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