As far as I know Lenovo is one the few manufactures that make Oled tabs with Dolby Vision support (The Samsung Oled tabs does not have that)
However, I have never got Dolby Vision to work in Kodi on the Lenovo.
The files i am trying works perfectly with Dolby Vision in Kodi on my Philips OLED TV and Shield.
I have searched and found others with similar problems on the Lenovo P12 Pro
I have the Lenovo P11 Pro myself right now, but am interested in getting the Lenovo Tab Extreme (Legion Y900) 14″ Oled with Dolby Vision if I can get it to work with Kodi
Any hints or suggestions ?