Another iPhone update is on the way, that will hopefully make it easier to unlock your iPhone with a mask!
You'll need to be wearing an Apple Watch, but the update will include a new feature which will allow you to unlock your iPhone with a mask.
Apple Watch owners will be able to opt into the new iPhone unlock feature. When your Watch is on and unlocked, you'll be able to use Face ID to unlock your iPhone even while wearing a mask. The Watch will provide haptic feedback letting you know your iPhone has been unlocked.