Upgrade for Wireless:This magnetic sticker add magnetic to your case for phone holder/ wallet case.Make your standard case compatible with for fast and easy magnetic wireless charging.Just enjoy wireless charging if your phone supports it.Come with 5 PCS magnetic ring + 1 installation guide. Strength Charging Sticker:This metal ring is not magnetic,unique design triples magnetic strength to ensure your phone stays securely attached to all accessories.Make your standard case compatible with for fast and easy magnetic wireless charging. THIN & Light Weight:Almost like a design on the back of your phone.Made up of metal and 3M sticker,1.65 inch outer diameter and 1.35inch inside diameter.Only 0.02 inch thick,weight 2.5g.No any effect on the use and appearance of your phone. Easily Install:Come with installation guide,easily ensures perfect installation every time by taking the guesswork out of application; once installed, the ring can be removed but not repositioned. Tips:Compatible with iphone 17 / Air / 16 / 15 / 14 / 13 pro max / pro / mini,samsung galaxy s25/s24/s23/s22 ultra / plus and more.If you have any problem when install,please feel free to contact with us to exchange replacement. 5 x Universal Magnetic Adapter Ring Sticker