Does the Xiaomi 15 Ultra support oleophobic layer?

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.