I’ve got accelerometer data and I want to identify the rotation angles of the screen.

Assuming when I put the phone at horizontal plane with screen up, the angles for roll, pitch, yaw are all zero degree.

At this time, the accelerometer value should be X=0 m/s^2, Y=0 m/s^2, Z= 9.8 m/s^2.

If I adjust the phone screen to arbitrary angle as below picture shows, how to caculate the roll, pitch and yaw angles from the accelerometer value at that place?