Yes, the Xiaomi 15 Ultra supports the oleophobic layer on its screen.
For your reference, here are more details about the oleophobic layer:
1. An oleophobic layer is a special coating applied to the surface of a display (or other surfaces, like lenses or camera covers) to make it resistant to oils, fingerprints, and other greasy residues;
2. The oleophobic layer significantly reduces the appearance of fingerprints on the display. This helps maintain a cleaner screen throughout the day, improving the device's overall aesthetic;
3. The oleophobic coating helps to repel oil, fingerprints, and other smudges, keeping the screen cleaner for longer and ensuring a more responsive touch experience. This coating also makes it easier to wipe off fingerprints, reducing the need for frequent cleaning.