What is the red square mark on mobile screen

[Android Central Question]

Red square mark on top left side on mobile screen and also White line in square

 

[belodion]

On every screen, always there?

 

[fuzzylumpkin]

Sounds like the OnePlus logo...

Is it in the notification area? If so just swipe the notification shade down and it should be there.

 

[mustang7757]

Which device?

I'll leave a Link to register so you can communicate here , As a guest account you can only post questions but can't reply.
https://forums.androidcentral.com/showthread.php?t=409154

 

[mustang7757]

Show screenshot

https://forums.androidcentral.com/showthread.php?t=413366

 

[belodion]

https://forums.androidcentral.com/a...nswer-our-questions-we-cant-answer-yours.html