The application has the capability to recognize the position and the orientation of the phone. It can differentiate among the following three states:

1. The phone is positioned horizontally and its face is up. This is “Face Up” state.
2. The phone is positioned horizontally and its face is down. This is “Face Down” state.
3. The phone is NOT positioned horizontally. This is the “Default” state.

While in the “Default” state, the application restores default settings to your ring stream and vibration. In the other states you can mute ring stream orand turn off vibration (depending on your settings).

https://slideme.org/application/face-ring