Deals
iPhone deals
Samsung Galaxy deals
Gift Ideas
Business employee
AARP
Military
First responders
Nurses & physicians
Teachers
Union
Credit card
Explore wireless
Plans & prices
Phones & devices
Upgrade
Bring your own
Add a Line
Switch and save
Trade in your device
International options
Shop new iPhones
iPhone 16
Samsung Galaxy S25
Why AT&T Wireless
Wireless help
More resources
Explore Internet
Plans & prices
Fiber
All-Fi (Wi-Fi)
Check availability
AT&T Internet Air
Moving services
Bundles
Gaming
Home business
Internet help
Internet Speed Test
More resources
Access from AT&T
Explore DIRECTV
TV bundles
DIRECTV help
U-verse help
Explore AT&T PREPAID
Prepaid plans
Phones
Bring your own phone
Prepaid deals
Prepaid account
Activate your service
Lease-to-Own
Home Phone Services
AT&T Phone
AT&T Phone – Advanced
Landline Phone
Lifeline
Phones & accessories
Digital phone help
Landline phone help
Bundles
Internet + DIRECTV
Internet + Wireless
Internet + Phone
Home office
Smart watches & devices
Smart home
In-car Wi-Fi
All accessories
Headphones
Cases
Chargers
Screen protectors
Speakers & smart home
Internet & TV equipment
PopSockets & more
Gadgets & gaming
Accessory deals
  1. Home
  2. Support
  3. AT&T Wireless

Add or remove NumberSync for Apple Watch

Talk, text, and use mobile data on your smartwatch. Learn how to set up your wireless number on an Apple Watch Series 3 (GPS + Cellular) or newer.

What you need to use NumberSync

  • Apple Watch® Series 3 (GPS + Cellular) or newer
  • A compatible iPhone® (6 series or newer running iOS 11.0 or greater) with AT&T Wi-Fi Calling enabled
  • AT&T wireless plans for both the iPhone and Apple Watch
  • An AT&T user ID and password

Other important info:
  • If you don't have a plan for your Apple Watch, you'll be prompted to add one.
  • You can only sync your watch to 1 wireless number at a time.
  • Want to sync your Apple Watch to an iPhone on another person's account? Just make sure you have the user ID and password for that account first.

Sync your iPhone to your Apple Watch Series 3 or newer

To talk, text, or use data on your watch, first sync it to your iPhone. Here's how to set up NumberSync for Apple Watch (GPS + Cellular):1

  1. Go to the Watch app on your iPhone and follow the prompts to start pairing.
  2. Select Cellular and then Set up Cellular. If you don't have a plan for your watch, you'll be prompted to select one. Be sure you have the AT&T user ID and password for the iPhone number you're using. 
  3. Make sure to check the box and read the Important Information for NumberSync on the 911 screen.
  4. Select Verify address. 
  5. Follow the prompts to complete your watch setup.


Once you activate NumberSync, you can start using your iPhone's wireless number on your watch.1

Good to know: When you call 911 from your watch, the call goes over the mobile network if possible. If a mobile network isn't available, emergency teams use device location data from nearby Wi-Fi® networks to help locate you. If that data isn't available, they go to the address you provide.

Did you get a new iPhone? Learn how to change the number your Apple Watch syncs to.

Remove NumberSync

  1. Go to your account overview, then open the My wireless section.
  2. Scroll to My devices & add-ons and choose your device.
  3. Select Manage my device.
  4. Choose the device you want to remove NumberSync from.

Heads up: Removing NumberSync doesn't cancel your smartwatch plan. It just means your watch won't be able to use our mobile network, and we'll still bill you for monthly service. To cancel your plan, contact us.
See all important details
Last updated: April 29, 2025

Browse topics

Did you get the help you needed?

Did you get the help you needed?