iDOO Ultra Slim Qi Wireless Charging Receiver Module for Most Android Phones with Micro USB Port - Narrow Interface Upwards, Wide Interface downwards (USB Port Location: in The Middle of Bottom) &radic; Make sure that your mobile is using charge cable with Micro USB head and it is located in the center. Only fit for Narrow interface upwards, wide interface downwards. Please check the location and feature of Micro USB interface in your mobile before purchasing. &radic; EASY TO USE: Plug in the Micro USB of the phone, then place the coil above the the back cover. Effortless Charging your phone for Cord-free Convenience. Just attaching the Wireless Charging Receiver Module on the battery. &radic; COMPATIBILITY: Works with most QI Standard wireless charger charging pads (not included). Easy assembly and dis-assembly to share with your friends and family. No interferring with other functions of the Smartphone. &radic; PORTABLE: Ultra-thin and light weight design, easy to install. Fit easily under the back of the phone, laying directly over the battery. No need change your phone cover. A really good choice. &radic; CABLE FREE: Tangled, incompatible power cords disappear with wireless power charging technology. Simply place your phone (have already inserted the receiver) on a compatible wireless charging pad (not included) and charging starts.