iPhone X Screen Randomly Goes Black
Hello !
I have an iPhone X which I bought used on eBay. Everything works fine but there's one problem:
When I use the phone just normally screen suddenly goes black, but the phone do not turn off. It's just a screen. I press the lock button, It locks and then I unlock it and continue using normally. Then it repeats again. It happened on Messenger, App Store, Pinterest so far, lot's of time. All of those apps were up to date, just like the IOS version.
Any solutions about what shall I do ?
Thank you in advance
iPhone X