The world's first Privacy Display of the Samsung Galaxy S26u
Could the world's first Privacy display of the Samsung Galaxy S26 Ultra be an innovation at the expense of eye health?
After Samsung tried to push new technologies into its flagship mobile, they finally created a buzz by launching the Galaxy S26 Ultra, which came with the world's first Built-in Privacy screen, which was not just a film protector or software-aided, but a modification of the screen hardware.
The principle of this screen is quite complicated, but it sounds very good. It is to put two types of pixels. The first type of pixels will spread the light as wide as a normal screen. The second type will only squeeze the light straight forward. When we turn on the privacy mode, this special pixel will work, making the person next to it see only a dark screen. It is ideal for the Thai way of life that requires mobile phones on BTS or congested buses, including when we have to press the PIN code, a public banking app. The system can choose to hide only the confidential part.
However, when it started to be used, everything was not as beautiful as it seemed, because the first user report said that the screen of the S26 Ultra was causing severe "eye fatigue" problems, even if the Privacy mode was not turned on. The image did not look smooth and lacked sensitivity compared to its predecessor, the S25 Ultra, which if you look at the text for a long time, will feel very easy to feel eye pain.
In addition to the sight, the quality of the image is another point to accept the truth. When entering full Privacy mode, the resolution and contrast of the image will immediately decrease. The bright colors will look noticeably fading. If you are a person who likes to view high-quality content, this screen can irritate you. Unfortunately, Samsung's strongest "resonant coating" has deteriorated in this model. This is expected to be the impact of redesigning the screen layer to support the Privacy system.
All in all, the Galaxy S26 Ultra is Samsung's big bet that it chooses to tear away traditional specification upgrades and offer tangible features, but this is a "1st generation technology" that still has relatively high vulnerabilities and trade-offs.
For Thai users who focus on eye health and watching movies through their hands, they may have to consider whether the convenience of hiding a page from the person next to you is worth the lost screen quality, because in the tech world, sometimes the "new thing" is not always the "best thing" for everyone.









































































