Getting started
Basic use
Calls and contacts
Messaging
Apps and media
Connectivity
Specifications
Cause 1 of 2: There are too many running applications
If you've used many applications on your phone, it may get slow because the applications keep running in the background.
Solution: End running applications.
End running applications
Press the Home key twice.
Slide upwards on the required application to end it.
Return to the home screen
Press the Home key to return to the home screen.
Or choose...