Please help me !!! iPhone 3GS wont go back to lockscreen?!

[Hyphy]

Hey everyone, this is my first post here so please, bear with me

So recently my iPhone 3GS cant go back to the lockscreen unless I press the power button. In settings - general - auto lock I set it to 1 minute... but after a few seconds without touching my iPhone the screen goes black then when I tap the screen or press the home button it goes back to where I was and not the lockscreen... It looks like an app or setting that is making this occur. Please help !

Thanks,

[i.Annie]

Since you suspect it's possibly something you've installed, go through Cydia and see what you have installed that could be causing it. Delete a package one by one and test it to find the culprit, then don't install it ever again.

[DanTheManMS]

I've only ever noticed this behavior when my 3GS is plugged into the charger, and even then only sometimes (I think when battery percentage is >90%). Perhaps your phone thinks that it's in this situation?

[nillam1]

If you've installed "ScreenDimmer" tweak, change the settings. Or you've installed "Advanced Preferences" then check "power management" in >Settings >General, k!

Good luck, if I think of anything else I'll add it or if u have more info let us know k!