2. Plug the USB power adapter into a power outlet.
While the device is charging, the touch screen may not function due to an unstable power supply. If this happens, unplug the USB power adapter from the power outlet or unplug the USB cable from the device.
3.When the battery is fully charged, first unplug the USB power adapter and USB cable from the device and then from the power outlet.
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 outlet to interrupt the power supply. The USB power adapter should remain close to the socket when in use.
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