Iphone shuts down when locked
i have a bit of a problem on my iphone 3g running 4.1 firmware ( yeah jailbroken =) anyway the thing is, when i lock it and then it normally goes in sleep mode, after i leave it like that for a bit ( 1-2 mins ) it would automatically turn off so i cant receive calls anymore and i have to boot it up again...its really frustrating.
Brightness regulation does not work.
and After pressing a couples time the power botton screen becomes white.
I had this problem back on 3.1.3, so i decided to update to 4.1 but it does the same thing....
Thank you for your support! =)