Calls and contacts
Apps and media
Cause 1 of 1: Your apps take up too much memory
If you've installed many apps on your phone, the phone memory fills up quickly when e.g. taking pictures or downloading music.
Solution: Uninstall apps.
Press and hold the required app until the icons start to jiggle.
Press the delete icon.
Return to the home screen
Press the Home key to return to the home screen.