Many of us have trouble functioning without sliding our finger over that shiny, vibrating device in our hand.
Whether it's organising a calendar, keeping up with friends or checking a work email after hours, many Australians just can't get by without their smartphone.
So it's perhaps not surprising that psychologists are now studying the extent to which our use of smartphones reflects our personality.
Associate Professor Amanda Gordon of the University of Canberra says the "zookeeper" is the most common type of smartphone user, accounting for more than a third of connected Australians.
The zookeeper uses smartphone apps up to three times a week to organise their family life on a calendar, check an email and look at weather forecasts.