1. To lock the screen at any time, press the Lock key.
   
2. To unlock the screen, touch and drag the Lock icon to the center of the screen.
   
3. To make a phone call, touch and drag the Phone icon to the center of the screen.
   
4. To send a text message, touch and drag the Messaging icon to the center of the screen.
   
5. To take a photo, touch and drag the Camera icon to the center of the screen.
   
6. To mute the device, touch and drag the Mute icon to the center of the screen.