You can reset an iPhone, even without the password, by putting it into "recovery mode" or erasing it via iCloud's Find My ...

Resetting your iPhone to factory settings is an essential process for various situations, such as troubleshooting persistent issues, preparing the device for resale, or passing it on to someone else.

You can reset and unpair your Apple Watch from either the Watch app of its paired iPhone or from the watch itself. Here's how ...