iphone screen color temperature
I recently bought 6 iphones for me and some friends, i recieved them in the same package and had similar serials (indicates they should have been manufactured in the same lot i guess), i unlocked them and distributed them amongst their owners and myself. Recently, we met up for a couple of drinks and i noticed that while we were discussing some apps for iphone each one looked different color temperature wise. Some looked more inclinated to blues, some too inclinated to red and some even to green. I mean it wasn't an abysmal color tint difference, but it was noticeable to the naked eye, i leveled all to the same point on the brightness level slider and i got different levels on brightness too.
Now i kinda like one of my friend's display better than my own, his iphone display colors are more lifelike than mine (which is inclined to blue *colder?*), so i was asking myself if anyone else noticed this and if there is a way to modify this by software, or if it is hardware related (that would be very strange, since they are serials alike they should being from the same lot/manufacturer)