5 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
Green vertical line on Galaxy S23 display after software update, requires display replacement
German tech outlet Futurezone reports Galaxy S23 owners seeing a persistent green line after a software update with no physical damage, attributed to overheating during updates, and states the only fix is display replacement.
What to check. Before buying, treat the S23 display as a known weak point: a green line can appear after a routine update with no drop or impact, and the fix is a paid display swap. Keep the phone cool during updates and confirm warranty/replacement coverage.
Permanent green and pink lines on Galaxy S23 display after One UI 8.5 update
Digit.in reports multiple Galaxy S23 owners seeing permanent green and pink lines after the One UI 8.5 update, believed linked to heat during installation, with no official fix confirmed.
What to check. If you own or are buying an S23, be cautious installing large updates in hot conditions; the line defect is permanent and the fix is a display replacement. Samsung's free-replacement program for this issue was only confirmed to run until 25 December 2025.
Battery drain on Galaxy S23 after One UI 7 update, users charging multiple times a day
Turkish tech site Webtekno reports Galaxy S23 owners on Reddit and Samsung forums seeing a marked rise in battery consumption after the One UI 7 update, with one user needing to charge several times a day even on light use.
What to check. Expect possible battery drain right after a major One UI update; it is often temporary while the phone re-learns usage, but if it persists a factory reset was reported to help. Budget for this when buying a used S23.
Camera quality worsened on Galaxy S23 after One UI 7 update
Yahoo Tech reports Galaxy S23 series users complaining that camera quality worsened after the One UI 7 update, with photos described as blurry, washed out and less sharp, and community moderators advising error reports via Samsung Members.
What to check. A software update can degrade the S23 camera output (blurry/washed-out photos). If camera quality matters to you, this is a software regression to watch for and report through Samsung Members rather than a hardware fault.
Overheating and fast battery drain on Galaxy S23 after Android 8.5 update
A Turkish owner complaint on Sikayetvar states that after the Android 8.5 update the Galaxy S23 heats up noticeably more and drains battery much faster, with a full-day charge now needing frequent recharging; Samsung Turkey responded asking for contact details.
What to check. Post-update overheating and battery drain are a recurring S23 complaint in the Turkish market. If you buy one, be ready for a possible update-related battery regression and check whether a newer update or reset fixes it.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko Smartphones catalog, version 0.1.1, under the CC-BY-SA-4.0 license.
