Securely hold your cellphone in one hand with a single finger, easily take pictures, and stop dropping your phone. When centered on the back of your phone, the ring phone holder allows you to better reach all sections of the screen. Simply set the adjustable ring (with 360 degree rotation) to your preferred viewing angle, sit back and watch your favorite videos. Simple 3 step application using industrial adhesive guaranteed to stick without ever falling off. Works with any mobile phone or phone case EXCEPT leather, silicone, or uneven surfaces.