Asus Zenfone 5Z - Double tap to highlight a word

When entering text into Apps such as your Messaging App, Facebook App and so on, you can tap on the words to start selecting text. Normally, you would then drag the left and right sliders to select the word, or words you want to highlight.

If you double tap on a word however, it will quickly select that word. Very handy for quickly copying and one words, name or place.