SmartPhoneComfort automatically sets your ringer mode based on phone position. There are mainly four phone positions: 1. Face-down position on a horizontal surface. 2. Face-up position on a horizontal surface. 3. Vertical position (car mode) - put phone into car dock. 4. Other positions - in hand, in pocket, etc. There are mainly four ringer modes: 1. Sound only mode; 2. Vibro only mode; 3. Sound + Vibro mode; 4. Silent mode; And special "Speakerphone" enabling option only for car mode. For example, you can set your phone to go to silent mode when face-down; putting on "vibrate" or "vibrate + ring" when face-up; switch on the speakerphone when phone has vertical position in car. Application runs completely in the background and friendly with battery life.