To use your Apple Watch, you need to pair it with your iPhone. Setup assistants on your iPhone and Apple Watch work together to help you pair and set up your watch.
If you have difficulty seeing your Apple Watch or iPhone, VoiceOver or Zoom can help—even during setup. See and Wi-Fi Set up and use cellular service.
Your iPhone and Apple Watch must use the same cellular carrier. However, if you If your Apple Watch isn’t connected or paired with your iPhone.
If you need to unpair your Apple Watch, see Set up your Apple Watch.