An apparatus and method are provided for rotating 3D objects on a mobile device screen. A first finger touch is detected on a touch screen of a mobile electronic device and the presence of a second finger is detected on a second sensor of the device. The second sensor is a different sensor than the touch screen. A motion of the first finger is detected while the second finger is present on the second sensor. In response, a 3D object displayed on a screen of the mobile electronic device is rotated by an amount related to the motion of the first finger. Simultaneous motion of the first and second fingers may be detected, and the 3D object rotated by an amount related to both finger motions.