The dreaded screen line issue is making an unwelcome comeback on Samsung smartphones. Across various tech forums, multiple Galaxy S23 owners are reporting sudden display glitches immediately after upgrading to the latest One UI 8.5 software.

Earlier in May 2026, Samsung globally rolled out the One UI 8.5 update, bundling performance optimizations and security patches for the Galaxy S23 lineup. However, just days after installation, many users noticed vertical green or pink lines manifesting on their screens. Owners insist their devices were used normally, with no history of drops, physical impact, or water damage. One Galaxy S23 Ultra user noted that the glaring streak appeared the moment their phone rebooted post-update.

Industry analysts suspect that the new software might be conflicting with the display driver, pushing the screen beyond its limits and causing irreversible physical damage to the inner panel. Fortunately, this isn't a universal bug; a large number of users still report smooth and stable performance after the upgrade.

Historically, Samsung has maintained a policy of offering a one-time free screen replacement for affected devices, provided the phone is under three years old and shows no visible signs of physical damage or external trauma.

For devices that are out of warranty or rejected for free support, facing a hefty repair bill is inevitable. In the Indian market, authorized service centers are quoting around 19,500 INR (roughly 5.4 million VND) for a fresh display panel. Still, some customers have shared that they managed to secure up to an 82% discount on parts, depending on local customer care policies.

Technicians strongly advise that if you encounter the screen line issue post-update, you should bring your device straight to an authorized service center for a diagnostic check. Because this software glitch ultimately results in permanent hardware damage, waiting around for a future software patch to magically fix the screen is not a viable solution.