In case of the Apple Watch, the side button is like iPhone’s Power button, and the Digital Crown is like iPhone’s Home button (when you press it). Once you remember that, it will be quite easy to remember how to restart or hard reset your Apple Watch if you’ve been using the iPhone or iPad.
Follow these steps:
How to restart your Apple Watch
STEP 1: Press and hold down the Side button until you see the Power Off slider.
STEP 2: Swipe on the Power off slider to turn off your Apple Watch.
STEP 3: Press the Side button again, and release the button when you see the Apple logo to restart your Apple Watch.
How to reboot or hard reset Apple Watch
- Press and hold the Digital Crown and Side button simultaneously for 10 seconds.
- Release the buttons when you see the Apple logo.