blackberry is a line of mobile phones made by the canadian company blackberry limited (originally known as research in motion, or rim, nasdaq:bbry). it does many different things like a computer but is small enough to fit in someone's hand. it is a mobile phone; it makes calls without wires. it can access the internet as well. it also has a calendar and camera, and can send text messages. the blackberry started out as a pager and later turned into a mobile phone. the blackberry has a pin which is an eight character hexadecimal identification number which is given to every blackberry phone. the president of the united states barack obama uses and supports the blackberry.