Today Apple released iOS 15.0.1 the fix for iPhone 13 owners who lost the ability to use the Unlock with Apple Watch when upgrading from iPhone 12.
This update includes bug fixes for your iPhone.
* Unlock iPhone with Apple Watch may not work on iPhone 13 models
* Settings app may incorrectly display an alert that storage is full
* Audio meditations could unexpectedly start a workout on Apple Watch for some Fitness+ subscribers
I was happy to see that Apple was able to get this update out within the first week of iPhone 13 availability. As an iPhone 13 Pro Max customer, I was frustrated that my brand new iPhone had one less important feature than the iPhone 12 Pro Max that it was replacing.
Once I got home and I was able to install the update, I was happy to see that my iPhone once again was able to unlock while wearing a mask after checking in with my Apple Watch Series 5 and Series 6.
To install iOS 15.0.1 on eligible iPhones, tap Settings > General > Software Update.