This is a wireless transmitter;
For Samsung S6 / S6 Edge Plus / NOTE5, LG G2 / G3 / G4 US version and Google series that with built-in receiver, only need the transmitter can they be charged;
For Samsung S3 / S4 / S5 / NOTE2 / NOTE3 / NOTE4 and IPHONE series, an extra receiver is needed (not included).