Some applications aren't ended completely when you return to the home screen. If you don't end them from the list of active applications, they keep running in the background which may slow down your phone.
Step 1 of 6
End active applications
Press the application icon.
Step 2 of 6
End active applications
Press and hold the required application until a pop-up menu is displayed.
Step 3 of 6
End active applications
Press App info.
Step 4 of 6
End active applications
Press Force stop.
Step 5 of 6
End active applications
Press OK to confirm.
Step 6 of 6
Return to the home screen
Press the home icon to return to the home screen.
End active applications
Press the application icon.
Press and hold the required application until a pop-up menu is displayed.