The 10 hidden secret features of Android M that you likely don't know about. Google didn't show these features on stage at their I/O 2015 conference either. Check out our full list.
Want to enable hidden settings in iOS 8? Being able to play around with the tools and toys that Apple uses when testing iOS devices is often the kind of thing that we can only wish for, but with iOS 8 it has become clear that the iPhone and iPad maker has failed to hide its advanced settings and options as well as it usually does.