Discover tips to help you sync and use your compatible devices.

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Quick tips

  • Make sure each synced device has the latest software installed.
  • Confirm your smartphone is connected to our network.
  • Restart your devices if you’re having a syncing issue.
  • Check with your internet service provider about default settings if you can’t make calls over Wi-Fi®.

AT&T ID tips

Update the wireless phone number linked to your AT&T ID

You already have an AT&T ID if you manage your AT&T WirelessSM account online. For AT&T NumberSync®, use the ID listed on your account profile.

Get info about NumberSync settings issues

  • Don’t see the number you want to sync? Learn how to assign your wireless phone number to your ID.
  • If you have AT&T Connected CarTM, use the same ID and password for your smartphone number to set up and use NumberSync. This ensures calls sent to and from a synced device are linked to the correct AT&T smartphone number.

FYI: NumberSync isn’t available for AT&T Prepaid®.

Sync a device to an AT&T phone number on a different account

If your watch is on a different AT&T account than your smartphone, use the AT&T ID and password for the smartphone account to sync them.

Last updated: October 9, 2026

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Activation, setup, transfer & unlock
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