After Apple pushed the iOS 15.1 developer preview version, it launched the upcoming beta 2 of the iOS 15.1 recently.
This update mainly fixes the problem that iPhone13 cannot be unlocked by Apple Watch. Earlier, Apple officially admitted that the iPhone 13 does not have an issue that cannot be unlocked by Apple Watch and said that this issue will be fixed through a software update. After the iOS 15.1 update, the issue has been resolved.
Besides, SharePlay is back in this update. Apple has added features such as shared playlists and TV program synchronization, allowing users' friends and family members to watch the same movies, TV and interact at the same time.