Galaxy s9- vertical black line

[Michael1283]

My galaxy s9 has a vertical black line on the lower left side of the screen which disappears only in unlock screen:

Does someone has any solution to this problems ?

 

[Dannydet]

I believe that is a swipe display.
More importantly, what the heck is the double white lines?

 

[Michael1283]

I believe that is a swipe display.
More importantly, what the heck is the double white lines?

Problem solved - it was the swipe display.
White lines are just light reflection