Why my phone have a black screen

My samsung z flip 5 got a black screen what's the problem?

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Has the phone been dropped or gotten wet? Does anything come up on the screen when the phone is charged?

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Hey there @kingtee, your question doesn't really give us a whole lot to go off of. as Lynx pointed out, any information about anything that might have happened to the device before your phone became unresponsive can help us to answer your question. How to ask a good question on iFixit

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