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Set up your ID for NumberSync

To sync your smartphone with a compatible NumberSync device, sign in with the user ID for your wireless number.

Use your ID with NumberSync

Heads up: Each wireless number on your account that uses NumberSync should have its own ID. This ensures that all calls sent to and from a synced device are linked to the right number.
  • You already have a user ID if you manage your wireless account online. For NumberSync, use the ID listed on your online profile. NumberSync isn’t available for AT&T PREPAIDSM.
  • Have an ID that isn’t linked to your wireless number yet? Learn how to assign your wireless number to your ID.
  • Not sure what your ID is? Go to the Forgot ID page and follow the prompts.

Create an ID

  1. Create an AT&T user ID.
  2. Select Add wireless number.
  3. Follow the prompts to create your ID.
Last updated: December 7, 2022

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