Earlier this week, we reported that some Galaxy S26 Ultra units displayed a rectangular red stain in the center of their screens. Users affected by the issue were worried that it could be an OLED hardware defect. However, Samsung has reportedly confirmed that the problem is related to software rather than the display hardware.According to a report from News1 Korea, Samsung confirmed earlier today that the “red stain” issue affecting some Galaxy S26 Ultra units is caused by software optimization. The company also revealed that it has already started working on a fix, which will be delivered through a future software update. In the meantime, affected users can visit a Samsung service center to have the issue resolved immediately. Samsung Galaxy S26 Ultra display red tint issue – Source: Abhijeet Mishra / SamMobile It was previously reported that some Galaxy S26 Ultra units developed a faint reddish stain in the center of the display. Since the issue appeared on phones that were three to four months old, many users assumed it was permanent OLED burn-in. Samsung collected several affected units and conducted an in-depth investigation before concluding that the issue is related to software optimization.Samsung uses a new OLED panel with LEAD 2.0 technology in the Galaxy S26 Ultra to enable the Privacy Display feature. The technology removes the polarizer from the OLED panel to improve color transmission and brightness. It also restricts the screen's viewing angle to prevent nearby people from seeing content (shoulder surfing) on the display.