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What is the couse sumsung A10 screen black out

Hardware Failure. The most common reason for a cellphone’s screen to go black is a simple hardware failure. This can be caused by the actual LCD going bad, by the cable that runs between the LCD and control board going bad, or even just by the cable’s connectors coming loose. Regards, Will

Or being dropped. Liquid damage. With no information to go on it could be anything.