If it's present all the time, and you've tried rebooting already, then the only way to get rid of it is to have the display replaced. It's a hardware problem.
4 replies
Hi
If this stays on all the time then you have a screen fault.
Make an appointment at Apple store or authorised apple repairer.
Cheers
Brian 🇬-1F1E7;
It appeared as tiny millimeter size very thin line, it is keep increasing the length of the line itseems.
Thanks very much 👍
How to get rid of Black Green line inside the iPhone screen