User's Manual Part 2

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8.12 Touch screen calibrate
8.13 G-Sensor calibrate
8.14 About the device
To calibrate the screen, press Settings Touch screen calibrate. Then
calibrate the touch screen by following the prompts. After that, the system
will prompt you to return to the settings list.
To calibrate the G-sensor of your tablet, Press Settings G-Sensor
calibrate, then calibrate your tablet G-Sensor following the prompts.
In this item, you can view the information on law, device status and
software version.
After that, the system will prompt you to return to the settings list.