The metal phone ring holder is portable and ultra-thin, supports 360-degree rotation, and is compatible with most smartphones and tablets. Portable and ultra-thin: Easy to use, safe to hold, prevent the device from falling and control device when operating the phone or taking pictures. Free to play mobile phone with one hand 360-degree rotation: After installation, it can be rotated at any angle, and it can also be used as a desktop stand, when you put the phone on the desktop, it can protect the phone camera from being scratched Easy to install: Remove dirt and dust on the smartphone/tablet, remove the protective film from the ring and paste it on the smartphone/tablet, press gently with your hands to ensure stickiness Extensive compatibility: Compatible with most smartphones and tablets Practical: This metal bracket has no magnet, but it can be used with a magnetic car phone holder How to paste: The sticky parts should be cleaned, press and held for 10 seconds before letting go, wait for more than 1 hour to use. Remember not to rotate as soon as it sticks, it may fall off