Turn Offload Unused Apps on or off
Restart mobile phone
Change screen brightness
Choose a network
Set up your mobile phone for MMS
Some applications aren't ended completely when your mobile phone returns 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 mobile phone.
End running applications
Tap the Home key twice.
Slide the required application upwards to end it.
Return to the home screen
Tap the Home key to return to the home screen.
Tap anywhere to dismiss
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