How To Remove Apple Watch From Old Phone. On the Watch itself head to Settings General Reset. Watch this video to learn how to Erase Apple watch Without iPhone Apple ID.

If you want to pair your Apple Watch and iPhone again keep your plan. Unpair Apple Watch and iPhone without Apple ID or iPhone. You will receive an email from the site when your Apple Watch is unlocked.
A Delete the card from your old phone as others have pointed out.
Sign in to the account you want to delete. Traditionally an Apple Watch can be reset through the paired phone by going to the Apple Watch tab in settings. Watch this video to learn how to Erase Apple watch Without iPhone Apple ID. Then hitting the info button an i with a circle around it and then selecting Unpair Apple Watch You can then also delete the cellular plan from the device.
