Light sensor doesn't work?

[Handsome Jack]

I just bought this Lg MACH(LS860) new.
According to this:
LG Mach specs


This phone clearly has a light sensor, there is no way to have it automatically adjust the brightness of the screen based on ambient light.
Why on earth did they do that for?

 

[mtstew]

Nothing about this phone makes any sense, sorry I couldn't be of more help.