[sdsubball23]

I got a replacement galaxy s5 on Jan 28 and I've noticed the screen has a yellow and blue tint during white backgrounds. If i look straight at the screen, the white has some yellow tint over the mid to top portion of the screen. However, if I move the phone up, the yellow moves down the screen and a blue tint appears on the top to mid part of the screen. The tint isn't heavy as I can see still get good colors out of things.

Is this normal for the s5 screen? My old phone had a yellow tint to the white as well, but I don't know if the tint changed from yellow to blue when I moved the phone up and down.

[Rukbat]

The light you see on the screen is LEDs on the innermost panel of the screen (the one closest to the inside of the phone). In front of that is a plastic diffuser, so you don't see spots where the LEDs are, you see an even field of light. (LCD TVs work the same way.) If the plastic they're using has a slight yellow tint to it, or isn't absolutely evenly white in some other way, you'll see effects like that. (A computer monitor that gives absolutely pure color - used in industries where the slightest shift in color means the difference between profit and bankruptcy - costs more than the most expensive desktop. It's not easy getting a pure white diffuser with absolutely no optical effects.

On my Note 3, if I tilt the screen far enough I get one of 2 effects. Tilting it horizontally gives it a slightlly blue tinnge. Tilting it vertically gives it a moiré pattern (like a rainbow). Most phones will show some effect if you're not looking straight on. (And if you wear polarized sunglasses, some phones will show a black screen in landscape or portrait.)