Users of iPhone equipped with iOS version 13.5.1, reporting a rather unusual problem caused by the latest update of the system. Owners of smartphones Apple reported a significant drain on the battery, which causes the use of the application streaming Apple Music service.
Currently there is no solution to this problem. Some people save themselves from removal applications, so called hard reset, but in many cases also helps to turn background applications. You can expect that the fix for this problem will appear along with iOS version 13.6, which is currently in beta.