My iPhone after upgrading to downgraded band custom firmware 3.1.2, and using blackra1n JB, it seems like my phone won't autosleep.
It doesn't autosleep when I plug it in to charge and take out the charge, it just stays at the unlock screen unless I press the power button.
Also, the battery drains like hell. I have tried restarting the phone, respringing ETC, haven't seen a difference yet. I also have changed all the options for the full optimization of the battery where as basically everything is done manually, no location or push, nothing running in background ETC.