At the release of the Samsung Galaxy S26 Ultra, attention was focused on its privacy display, a feature designed to prevent others from seeing the screen from the side. This includes its options, hardware secrets, and the degradation of image quality when viewed from angles other than directly in front. The Xiaomi 18 Pro and Xiaomi 18 Pro Max also offer a privacy screen, which can be activated through the settings under the Privacy and Security section, then to Xiaomi Privacy Display. The privacy display of the Xiaomi 18 Pro uses a hardware solution with alternating regular pixels and narrow viewing angle pixels, bordered by tiny walls. The manufacturer promises a reduced brightness of about 1% when viewed from the side, beyond 60 degrees. In tests, this was not enough to match the Samsung Galaxy S26 Ultra, which performs better in terms of privacy, with difficulty distinguishing what is displayed when shifted slightly to the side. The Galaxy S26 Ultra remains effective in preventing glances from above or below the smartphone, while the Xiaomi 18 Pro does not prevent these glances. Both the Xiaomi 18 Pro and the Samsung Galaxy S26 Ultra allow users to set rules for the privacy display, such as determining the list of applications on which the filter should be activated. The Xiaomi 18 Pro also includes an option to automatically activate the privacy screen on sensitive pages such as password entry, payments, transfers, and messaging. However, the global version of the interface has some translation errors, such as the name "Privacy Display Page" and the switch called "Full Screen Privacy." These translation errors may be corrected in the French version of the software when the Xiaomi 18 Pro arrives in Europe. The Xiaomi 18 Pro offers two additional features: "Smart Activation," which proposes to create privacy display rules based on location, using the Pro mode of Xiaomi Hyper XiaoAi, the company's AI assistant, and "Privacy Notification," which warns the user if someone is looking at their screen over their shoulder when the confidential display is activated. The "Privacy Notification" function was tested and found to be effective, but it requires the user to have previously set up facial recognition unlock. The Xiaomi interface specifies that it uses facial data to detect an unknown person peeking. With a colleague positioned behind the user trying to look at the screen, the Xiaomi 18 Pro activated to alert the user. Users can choose to be warned by vibrations.