iPhone 15 Plus
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My phone's battery life is short
Solution 11 of 14: There are too many running applications
Some applications aren't ended completely when you return to the home screen. If you don't end them from the list of running applications, they keep running in the background which may slow down your phone.
Slide your finger slowly upwards starting from the bottom of the screen until the list of running applications is displayed.
Slide upwards on the required application to end it.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.