Reference
The touch screen does not work as expected.
- Make sure you are using the touch screen correctly [Details].
- If the touch screen is damaged (scratched, etc.), contact the service/support center named in the warranty.
- If the touch screen does not work, turn off your tablet, and then turn it on again.
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If you cannot turn off your tablet, press and hold the power button for about 10 seconds to force it to turn off, and then turn it on again [Details].