Using advanced and sticky 3M VHB adhesive, this holder is more durable and more steady when works as a kickstand. Your great companion when watching movies and videos. Put the phone ring holder on the back of your phone, it will safely secure your phone wherever you go, preventing it from slipping and dropping. How to use: 1. Wipe the device surface with the alcohol wipe provided until it becomes dry. 2. Peel off the transparent film and stick it on the smooth back of your phone, then gently press to ensure it is firmly and completely attached. 3. Peel off the 3M adhesive on the phone ring holder and stick it on the transparent film, then gently press to ensure it is firmly and completely attached. 4. Rest it for 12 hours and then you can freely grip it. Important Notices 1. Please use the film to avoid glue stains on your phone in case you don't need the ring anymore. 2. Please stick it directly on your phone case, No need of the transparent film. 3. Please avoid the wireless charging