Apple is still dealing with the iPhone X responsiveness issues when exposed to cold temperatures, but it may have another problem on its hands. Apparently some iPhone X units are developing an issue with a green line going vertically across the display. All the affected units were reportedly working fine when taken out of the box, but after some time the line pictured below appears. By the looks of it the issue is either caused by an issue with the display controller or by the ribbon cable connecting the screen, but it's hard to specify without having seen a defective device in...
Source: https://www.gsmarena.com/some_apple_iphone_x_oled_screens_plagued_by_green_lines-news-28210.php
