For many/most the ambient light sensor on the iPhone works fine.I'm skipping it because my phone now is everything the iPhone 6 will be, plus I have 2GB of ram already.
plus my ambient light sensor actually works, unlike the iPhone where it goes bright and then you have to turn off the screen and back on to make it go down again.
Unbelievable.
Also my battery is twice as big as the iPhone 6.
What can Apple do to make me go back to an iPhone. That should be the question.