Business Insider breaks down the numbers behind the obsession.
5.2 billion people use cell phones around the world.
60 million Instagram photos are shared a day.
And on average,18 to 24 year olds check their phones every 10 minutes.
The average cell phone user spends 2 hours and 42 minutes a day on their phones. That's about 19 hours a week.
So, how do we spend all that time? Click here for a closer look.