We have ATT cellular, two phones and one Apple Watch (cellular) that has its own “number”. How do I switch the watch from one iPhone to the other iPhone? Does anything have to be done with ATT or just unpair, reset, and pair with the second phone?

Greetings Watch_Reassign_Question,

Welcome to Apple Support Communities. If the Apple Watch uses the same carrier as the iPhones, all you need to do is unpair, erase, and pair with the other iPhone. The steps to do so are here if needed:

Unpair and erase your Apple Watch - Apple Support

Set up your Apple Watch - Apple Support

Let us know if you have any questions.

Have a great day!

Hi Watch_Reassign_Question,

You're welcome! Reach out to Apple Support Communities if assistance is needed in the future.

Enjoy the rest of your day!