(Touch screen screen calibration tool. It seems that both mobile phones and tablets can be used universally. (Tested by Android tablet itself) The electronic products with touch screen will drift a little after using for a long time. For the convenience of use, it is better to proofread from the beginning regularly. PS: Touch screen calibration skills If the touch point drift occurs during screen calibration. The solution is: point the stylus on the calibration point of the screen. After the drift appears, the stylus should not leave the screen. Move the stylus and drag the drift point back to the calibration point.)
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