Unpair and erase Apple Watch
There are two ways to remove the contents and settings of your Apple Watch:
Unpair your Apple Watch from your iPhone. This erases the contents and removes Activation Lock (which prevents someone else from activating it). Do this if you plan to sell or give away your Apple Watch.
Erase your Apple Watch. This erases all content and settings from Apple Watch, but leaves it paired with your iPhone. Do this if you plan to keep your Apple Watch, and just need to reset it.
Unpair Apple Watch and remove Activation Lock
Open the Apple Watch app on your iPhone.
Tap My Watch, then tap All Watches.
Tap
next to your watch, then tap Unpair Apple Watch.
Your Apple Watch is erased and removed from your iCloud account, Activation Lock is removed, and your watch is ready to be set up again. For more information, see the Apple Support article About Activation Lock on your Apple Watch.
Erase Apple Watch and settings
To erase your Apple Watch without unpairing it, follow these steps.
Open the Settings app
on your Apple Watch.Go to General > Reset, tap Erase All Content and Settings, then enter your passcode.
If you have an Apple Watch with cellular, choose to keep or remove your cellular plan.
Keep your plan if you want to pair your Apple Watch and iPhone again.
Remove your plan if you want to pair your Apple Watch with another iPhone or intend to cancel your cellular subscription. (Contact your carrier to cancel your subscription.)
When the process finishes, set up your watch again. When asked, restore from a backup.
You can also open the Apple Watch app on your iPhone, tap My Watch, go to General > Reset, then tap Erase Apple Watch Content and Settings.
Note: If you can’t access the Settings app on your Apple Watch because you’ve forgotten your passcode, you must reset it.
Remove your cellular plan
If you have an Apple Watch with cellular, you can remove the cellular plan at any time.
Open the Apple Watch app on your iPhone.
Tap My Watch, tap Cellular, then tap
next to your cellular plan.Tap Remove [name of carrier] Plan, then confirm your choice.
You may need to contact your carrier to remove this Apple Watch from your cellular plan.
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