Set up NumberSync for Samsung Galaxy Watch4 or Watch4 Classic

Learn how to set up NumberSync on your Samsung Galaxy Watch4 or Watch4 Classic with your FirstNet smartphone number, to talk, text, and use cellular data from your watch. Certain restrictions, requirements or limitations may apply. Visit NumberSync Overview for Samsung Galaxy Watch4 and Watch4 Classic for more details.


Sync your watch with an Android smartphone

  1. Turn watch on and open Galaxy Wearable app on your smartphone. Follow prompts to complete Bluetooth pairing.

  2. Smartphone will prompt to setup NumberSync. To start setup process manually on the watch, select Settings, Connections, then AT&T NumberSync.

  3. Select Get started.

  4. An overview will be displayed. Scroll to the bottom and select the Checkmark icon.

  5. On smartphone, select Sync watch.

  6. Review the terms and conditions and select Agree.

  7. The watch will generate a sync code. Enter this code into your smartphone if it isn’t automatically populated.

  8. A confirmation message will be displayed on the watch and the smartphone once syncing is complete.

  9. Turn off Bluetooth when ready to use the cellular connection for the watch.

Enable AT&T Messages Backup & Sync on your Android smartphone

For the best NumberSync experience, AT&T Messages Backup & Sync should be enabled on your smartphone. Setup steps may vary slightly by smartphone manufacturer.

  1. On the smartphone, open the Messages app.

  2. Select the Settings, then AT&T Messages Backup & Sync.

  3. Select Turn it on if it’s not already enabled. We’ll send you a confirmation text.