Problem with iBooks
Hello everyone! I have a problem with iBooks on my iPhone.
When I read the book and do not touch the phone, a minute later the phone should lock (in the settings I have set "Auto-Lock 1 minute"), but it is not always locked. A moment of screen slightly dims, goes for a few seconds and that the phone must be locked, but the screen lights up again.
Anyone ever had the same problem?
iPhone 5s, iOS 7.1