Hard reset is restoring your device to its default factory settings. If you choose to restore your Apple Watch to factory settings, you will lose all the personal data on its internal storage, such as apps, images, and contacts.
You may need to hard reset your Apple Watch if the soft reset method doesn’t solve the problems you are facing with your device. You may also need to restore your device to its original settings before selling or trading it in.
There are two ways to hard reset your Apple Watch. You can either do so through your paired iPhone or through the watch itself. We recommend that you backup your apple watch first to ensure that you don’t lose your personal data.
Method 1: Hard Reset Your Apple Watch With iPhone
Pair your Apple Watch with your iPhone
Open ‘Watch’ App
Scroll down and tap ‘General’
Scroll down to the very bottom and tap ‘Reset’
Tap ‘Erase Apple Watch Content and Settings’
To confirm erasing all your data, tap ‘Erase All Content and Settings’ twice
If your Apple Watch is the cellular model, then you’ll have to choose between:
Method 2: Hard Reset Directly From Your Apple Watch
On your watch, launch the ‘Settings’ App
Scroll down to the very bottom then tap ‘Reset’
Tap ‘Erase All Content and Settings’
If you’re using one, enter your passcode
Scroll down and tap either ‘Erase All’ or ‘Erase All and Keep Plan’