My apple watch was purchased from xfinity mobile. I paid for it full. I moved it to another carrier with my company. After buying a new apple watch, I wanted to pair it with a line on my xfinity mobile account. I cannot bring it back!!

Greetings, jplans.

If you need to set up cellular on your Apple Watch, use the steps below:

“Set up cellular on Apple Watch

You can activate cellular when you first set up your Apple Watch, or when you set up a watch for a family member. During setup, look for the option to set up cellular, then follow the onscreen steps.

You can also set up cellular later from the Apple Watch app:

1. On your iPhone, open the Apple Watch app.
2. Tap the My Watch tab, then tap Cellular.
3. Tap Set Up Cellular.
4. Follow the instructions for your carrier. You might need to contact your carrier for help.” Set up cellular on Apple Watch 

Please note, you may need to contact your carrier for any additional steps, so it may be possible that you need to go to a store. We suggest double checking with their support: Xfinity Customer Service - Contact Us

We hope this helps to get your Apple Watch activated on your Xfinity plan. 

Best wishes.