Can you believe the modern smartphone has only been around for 6 years? In that short time, it's changed the way society does business, communicates, flirts, gets news, makes news, plays games and so much more. According to a Pew survey, more than half of adults in the U.S. own a smartphone.

That isn't to say most people are smartphone experts. Just owning a smartphone doesn't mean you know all the tricks. In fact, here are five that you might not know, but really should.