Help Screen not going off ..

[Mavis Cruet]

Hi ..
For the past few days, on several occasions (but not all of the time) my screen is not going off after the time limit I have set, which is one minute. I check the phone and then it's left in my locker at work. As I hadn't realised the screen was staying on, this plays havoc with my battery, which is only lasting about 6 hours.
I understand it's probably caused by a rogue app, but I haven't a clue which one .. nothing seems to be running.
What do I need to do, to track it down .. Thanks.

 

[Raggy]

Just remove 1 at a time until the problem is solved

 

[Cougar]

Might be worth looking at the battery info / usage history, see if that sheds any light on it? Dial *#*#4636#*#* and see which apps are using the most resources? (4636 = 'info' on the keypad)