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.
- Update your iPhone to iOS 14.5
- Update your Apple Watch to WatchOS 7.4
- 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.