When the wireless charger is used up, you need to unplug the power plug and keep the charger connected for a long time, which may cause the charger to heat up. Wireless charger can not be used, may be the phone placed in the wrong position, generally need to put the phone in the middle of the charging disc.
Wireless charging technology is a special way of power supply, it does not need the power line, rely on electromagnetic wave propagation, and then the electromagnetic wave energy into electricity, and finally achieve wireless charging.