12 Pcs Magnetic Wireless Charging Metal Ring with Sticker, 2 Styles, Universal Ultra Thin Notched and Round Ring Conversion Kit Compatible with MagSafe iPhone 13 12 Pro Mini Max Galaxy S21, 3 Colors

Love these. First one lasted a couple of months before it started losing it's stick but you get a pack so easy to fix a new one. Good magnetic power for my magnetic phone holders in car and and for my ring stand.

I use a leather wallet case, which is 2-parts (I can take the phone and normal case off, to use as a standard case) and the back stops most chargers. Very pleasantly surprised that these work through the cases…both of them!By putting one on the back of the normal case, then adding it to the wallet case, it works great - even with my car charger.Very happy…and have lots to spare!