XCSOURCE&reg; Universal QI Wireless Charging Receiver film for micro-USB Android Mobile BC318 Designed for almost every cellphone with a Micro USB charging port. Ultra thin design, compact and light weight without increasing additional weight of the mobile. Easy assembly and disassembly, convenient to use in 3 steps as follows: Take off the back cover, plug in the micro usb head, put on the back cover. Energy Card can be attached at all time without without interrupting normal use.