An issue that’s been blighting Samsung phones appears to have reared its ugly head again, this time with the Galaxy S23.
Back in May, we reported on numerous Samsung customer complaints concerning a bug that produces a permanent green line spanning the height of their Galaxy phone‘s display.
The issue reared its head across a number of devices following the April security patch. Now, it appears to be back with a vengeance.

Chris Martin
Several recent online reports complain of a green line bug that specifically affects 2023’s Galaxy S23, Galaxy S23+ and Galaxy S23 Ultra after installing the One UI 8.5 update.
According to Samsung forum user rapheal29, a green vertical line appeared on their handset following the recent software update during normal usage. They claim that there’s been “no physical damage, drop, water exposure, or impact to the device”.
Pictorial evidence is supplied:
rapheal29
Feeling a little green (or pink)
Other users are reporting a variation on the issue, with a pink line in place of the green.
Reports seem to be scattered across various forums and platforms, including Reddit and X, and seem to incorporate multiple Galaxy S23-series handsets.
One X user reports the issue affecting their Samsung Galaxy S23 Ultra. Again, the handset in question has reportedly sustained no damage prior to the update.
As Android Authority points out, the issue with the Samsung Galaxy S23 series is that Samsung’s offer of a free screen replacement only applies within three years of purchase. Anyone who purchased their phone within four months of the Galaxy S23 series’ 17 February 2023 release date will be out of luck and may need to pay for the repair out of their own pocket.
Previous green line bug reports have pointed to a common factor in many instances – an overheating Galaxy handset. This has led to advice (unofficial, we hasten to add) that includes waiting until nighttime to update and making sure the phone is not plugged in when you’re using it.
Given the widespread and repeated green line bug, we’d urge you to hold off on installing the One UI 8.5 on your Galaxy phone. It might save you a lot of hassle.
Looking further ahead, One UI 9 (based on Android 17) is expected to debut on the Galaxy Z Fold 8 series (including brand-new wide model) and Z Flip 8 series in July.
