It used to be when I plugged my S2 in power, it wound enter Bedside Mode, and would soon dim, so it was not so bright. But now it dims, then a few seconds later it comes back to full bright and stays that way. If I don't have it plugged into power it eats the battery all night long.
Any idea what could have changed this? I have pulled the battery and reset, but it still does the same thing.
I think it's maybe because of the auto-brightness setting that it has. Maybe try changing the brightness to something that you like and seeing if that helps.