Here's how to lock and put any Android device to sleep with a double tap (no root required!)

While the likes of the various double-tap-to-wake and double-tap-to-sleep gestures that can be found in a large number of smartphones are, all in all, yesterday's news, there is still a whole cornucopia of devices that are devoid of these features.



What a pity! Although some may argue that these are not handy at all and add nothing positive to the user experience interface, we can't deny that these can potentially be among the show-stopping features of your brand new smartphone - after all, the iPhones can't do that just yet.

But what if your manufacturer has decided ...