1. Home
  2. Support
  3. AT&T Wireless

Learn how to use NumberSync

Link your AT&T smartphone number to a compatible device to make and receive calls without your phone turned on or nearby.

About NumberSync

AT&T NumberSync® offers these key features:

  • Use one phone number on other devices. You can make and receive calls on the synced device using your smartphone's number.
  • Leave your phone behind. You don't need to carry your phone with you to stay connected. Each synced device alerts you when someone calls your smartphone's number.
  • Show the same number. Your smartphone's number shows on the caller ID for outgoing calls.

Instructions

You can sync a compatible device to your smartphone in just a few taps. Get detailed steps for these compatible devices:

  1. Apple: Select Apple Watch®, iPad®, Mac® models
  2. Android: Watches and tablets
  3. Alexa app: Amazon Echo® devices
  4. Connected Car: Select BMW®, Rolls-Royce®, and MINI® models

Billing info

Bill details overview

Check your individual plans to confirm specific billing and usage charges.

Your iPhone plan will show:

  • Calls on the watch via Bluetooth®
  • Data accessed from your watch via Bluetooth
  • Calls on a tablet or a Mac

Your watch plan will show:

  • Calls or data used when on our wireless network

Your tablet data plan will show:

  • Data used when on our wireless network

Your Connected Car plan will show:

  • Calls or data used when in your car

FYI: Check the usage details on your bill and look for Wi-Fi or NBSSCall to identify NumberSync calls.

Last updated: November 21, 2025

Did you get the help you needed?

Did you get the help you needed?