Sony Xperia Z3 D6616 cool or warm tint on white?

[uziii]

I have 3 Z3 in the family, on mine default screen background white is yellowish compare to other 2. Messaging, settings, and Web pages they all give warm white, gray colors comes out as close to black, I have to set blue in white balance to 128 to get same tint as others but then screen dims quite a bit.

[uziii]

Anybody? I was reading an article about warm white and cool white tint from Sony engineer, mine dont look like that.

[xperiaz14]

Yesterday I bought xperia z3 d6616. I am also facing the same problem. Screen is warm white. It is on lollipop 5.0