Defective Pixel Test

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    Q. What is the first thing you should do after purchasing a smart phone?
    A. You must test it for defective pixels.

    'Defective Pixel Test' is a utility application that allows you to test your iPhone simply for defective pixels (dead or stuck) on RGB Background.
    Touch the screen to change RGB screens and check whether any of the Color R, G, or B pixels comprising the LCD is defective.
    The test will be completed after testing all of the following eight RGB screens for defective pixels.

    R - Red Color
    G - Green Color
    B - Blue Color
    RG -Yellow Color
    GB - Bluish Green Color
    RB - Purple Color
    RGB - White Color
    Reverse RGB - Black Color

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