Why does my screen display spontaneously turns black then turns back to normal after a while?

Question

My Redmi Note 7 was submerged in a pail of water so I had to dry it for a few days. I opened it and it worked great for a while but after a few hours, the screen went black. I had to wait for a couple of hours before it turns back to normal. The same thing repeats again. What could possibly cause this?

Peihoulousy · Answer

This is because your mobile phone hasn't completely dried. The circuit system of your mobile phone conflicts with your screen. Dry it for a few days and try to turn it on. Don't play it, just pull the battery and don't shut down normally, otherwise you will damage the motherboard , The phone had to be invalidated.

Ettidttinger · Answer

Dry it for a few days and try to turn it on.