IOS Brands that Require The Reciever :
iPhone 6, iPhone 6s, iPhone 6 Plus, iPhone 6s Plus, iPhone 7, iPhone 7 Plus is required to use any wireless charger receiver.
ALL Android System is required to get a wireless charger reciever Except the following models:
Samsung: S6/S6 edge, S6 edge+, Note5, S7/S7 edge, S8/S8+, Note8
LG: G3 G5 G6/G6+
Nokia: Lynua830 Lumia920 Lumia1020 Lumia1520 Lumia 930
Please remove any metal accessories attached behind your phone while charging, such as metal phone sticker, magnet sticker.