Earlier this morning, we reported of a problem where iPhone X displays are slow to respond when operating in cold temperatures. Apple says it will fix that issue with a future software update, but a new defect won't be so easy to fix. Mac Rumors first noted that reports are beginning to spread of iPhone X devices being marred by a thin green line that runs vertically down the OLED display.
The line shows up on either the right or left side of the display, usually very close to the bezel edge. Reports are coming in from around the globe, and they aren't limited to one particular configuration (in other words, it's affecting both 64GB and 256GB variants of the iPhone X). According to the report, none of the smartphones were afflicted with the defect when first taken out of the box, but the condition developed over time (in some cases, within the first day of use).
Unfortunately, performing a hard reset on the iPhone X doesn't get rid of the green line, which points most likely to a hardware defect with the display and/or display controller. The good news, however, is that Apple is replacing the smartphones for customers that are affected.
It should be noted that the iPhone X's display is manufactured by Samsung. Last year following the release of the Galaxy S7, some users reported a similar OLED display defect on their devices, albeit the line was pink in color instead of green. Samsung attributed the pink line to a display failure.
The iPhone X is Apple's first smartphone with an OLED display, and so far it appears that there are still some issues that need to be resolved as production ramps up. With that being said, for a smartphone with a base price of $999, you would expect near perfection. Or, perhaps the customers are just "holding it wrong"...