Unlock iPhone with Apple Watch when using a Face Mask

 iOS 14.5 bring the feature that is helpful to unlock the iPhone when wearing a facemask.

Here are the things you have to do to enable this feature.

1. Update your iPhone to iOS 14.5
2. Update your Apple Watch to WatchOS 7.4
3. Once you complete step 1 and 2, go to: 

Settings => Face ID & Passcode  => Enter Passcode => Scroll down to the section:  "UNLOCK WITH APPLE WATCH" => Enable the option for your watch. It may take about 30 seconds for the swipe switch to turn green.