hye there.
i have a bit problem from my sony k810i
my brightness probably not constant.
it low at screen. i setting up at the brightness and save it,
it will be ok before i locked the phone.
after i locked and unlocked back.the brightness becomes low again.
could anybody helps me..seriously freaking sad...

A reflash might help.

thanx dude..

could anybody help me ..?? my phone still have a problem with the back light..i have reflash 3 time and the problem didn't solve. freaking sad..!

Could be the lightsensor . Try holding your finger over it while unlocking the phone, and see if that makes any difference

AFAIK the 810 doesn't have a light sensor for screen brightness.

It hasn't ?! My W810 had it

Oh well, forget what I said then