Apple has released iOS 15.1.1, which is a minor update to the iOS 15 version. The focus is on improving the call drop problem encountered by iPhone 13 and iPhone 12 users. The build number of the iOS 15.1.1 update is 19B81, which can be obtained through OTA download on compatible iPhone and iPad models. Users can obtain it from the software update page in the settings application on the home screen.
According to Apple’s release notes, iOS 15.1.1 fixes the call drop problem on iPhone 12 and iPhone 13, as well as regular bug fixes. Apple did not provide specific release notes for iPad OS 15.1.1. Apple’s previous version, iOS 15.1 build 19B74, was released on October 25. This version added support for SharePlay and vaccine card input in Apple Wallet. This is also the first bug-fix version after the update was released.