Dial interface color temperature change and automatic backlight problem

hi，
I got the new iphone6 today, 16G, IOS8.1.1, when I use, I find some problems as below:
1) when you use dial , you will see the color temperature is changed, form redness to blueness.
2) If u open the automatic backlight function, when u go to more brighter environment, the brightness change to higher, but then u go to darker environment, the brightness is not changed or changed very slowly.
dose anybody also have these problems?who can explain the root cause?

Do you have a protective film attached to the screen? If yes, make sure it does not cover the ambient light sensor on top of the screen. Same if you are using a case around the device.

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[http://i.imgur.com/1lhvb.png example3]
[http://i.imgur.com/UWOOp.png example4]

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Dial interface color temperature change and automatic backlight problem

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