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Cause 13 of 15: There are too many running applications
If you've used many applications on the phone, the power consumption may increase because the applications keep running in the background.
Solution: End running applications.
End running applications
Press the Application key.
To end one running application, slide your finger upwards on the required application.
To end all running applications, slide you finger right on the screen.
Press Clear all.
Or choose...