Operation Manual

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power source not being adequately filtered out. You may wish to give
the unit a full charge and then disconnect from power for use, or, if
possible, charge with a USB cable instead. Otherwise, your screen
calibration may be off. To correct this, check for Settings->Touchpad
Calibration to see if you can recalibrate this to resolve the issue.
Q: Why is my tablet stuck at boot up, and the Android screen will
not go away?
Please see above: Should I perform a Firmware Update?