Beyond fixing the background app issue, the fix also handles issues where iPhone could temporarily lose mobile signal after a call and another "where mobile data may temporarily not be available", the company said in a release.
The update is around 98.7 MB in size and it is available for all compatible iPhones.
If a user has not received notification about the new iOS update, he or she can manually download and install it by going to Settings> General> Software Update.
Users can also turn on automatic updates for new software updates.
The updates also address the problem with the Kerberos single sign-on service in Safari.
Additionally, there is a fix for the issue which affected connectivity with YubiKey Lighting-powered accessories.