Reports from users in South Korea have pointed to a visible 'red stain' or red tint appearing on the Galaxy S26 Ultra's display under certain conditions. The issue has been particularly noticeable when the screen shows bright colors like white. Many users are now concerned, as the red areas appear either across wide vertical strips or at specific points.
According to a South Korean news outlet, News1, Samsung has investigated and traced the problem to its Privacy Display feature. An unnamed company official reportedly explained that the red screen issue occurs when the device is exposed to intense light and operating at maximum brightness. The good news is that Samsung has not ruled out a fix.
The publication highlights Samsung’s assurance that a software update is in the works to resolve the issue. That means the problem is not hardware-related, and users should expect a solution without needing to replace any components. The reports also note that most affected users had owned their S26 Ultras for three to four months before noticing the redness, suggesting the issue may emerge over time.
Privacy Display, the feature at the heart of the problem, restricts the viewing angle of the screen to enhance privacy. While it's a software-based function, it has impacted display performance. Independent testing, including from Android Central contributor Nicholas Sutrich, showed that the S26 Ultra's screen is dimmer than that of its predecessor, the Galaxy S25 Ultra, particularly at wide viewing angles.
The issue isn't just limited to red tinge problems. The S26 Ultra's screen still uses an 8-bit color depth, unlike some competitors that have adopted 10-bit displays. It also continues to use a 480Hz pulse-width modulation (PWM) dimming rate, which has drawn criticism from users sensitive to flicker. By contrast, some competing flagships now use dimming rates as high as 5,000Hz.
Android Central's testing has also found the S26 Ultra's display to be less bright in certain conditions than the S25 Ultra's. Combined with the privacy display issue, these factors have led to mixed reactions from users and tech reviewers. The red screen problem adds to the growing list of concerns about how the software is affecting real-world performance.
Samsung's willingness to address the issue through software is a promising sign. However, it also raises questions about how thoroughly the company tested the Privacy Display before launch. The fact that many reports emerged around the three-to-four-month mark suggests that the issue might not be fully resolved by the update alone. If the fix reappears later, it could frustrate users and harm the device's reputation.
For now, affected users can at least look forward to a resolution. But for Samsung, the incident highlights the delicate balance between new features and display quality — and the need for more thorough real-world testing before pushing major software features to mass-market devices.