How To Reset Apple Watch Forgot Passcode. Next open the Watch app on your iPhone. Press and hold the Digital Crown until you see Erase all content and settings.

But you can restore from a previous back up. Press and hold the Digital Crown until you see Erase all content and settings. This process deletes your data and settings including your passcode giving you access to set up your iPhone again.
Press and hold the side button until you see Power OffPress and hold the Digital Crown until you see Erase all content.
This will take you to the My Watch section. Here is how to factory reset apple watch series 3 forgot passcode. Press and hold the Digital Crown until you see Erase all content and settings. But you can restore from a previous back up.

