2. Plug the USB power adapter into a power outlet.
If the device receives an unstable power supply while charging, the touch screen may not function. If this happens, unplug the USB cable from the device.
3.When the battery is fully charged, first unplug the USB cable from the device, and then unplug the USB power adapter from the electrical socket.
To save energy, unplug the USB power adapter when not in use. The USB power adapter does not have a power switch, so you must unplug the USB power adapter from the electrical socket when not in use to avoid wasting power. The device should remain close to the electrical socket while charging.
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