The qi wireless charger can charge for all smart cellphone. It consist of two parts, the receiver and the transmitter.
Current flowing within the receiver coils is converted into direct current (DC) by the receiver circuit, thus charging the battery of the device.
The magnetic field generates cut tent within the receiver coil of the device.
Alternating current flowing within the transmitter coil creates a magnetic filed which extends to the receiver coil (when within a specified distance.
Mains voltage is converted into high frequency alternating current (AC).
The alternating current is sent to the transmitter coil by the transmitter circuit.