BlackBerry (RIM, Canadian company)

The device, created by Research in Motion Ontario, is the largest model in the world of business. According to RIM, in November 2008,the BlackBerry had about 21 million users worldwide. In June 2010, RIM has announced they sold up to 100 millions BlackBerry due to record sales (they sold 11,7 millions BlackBerry in the first trimester).
he leading models are PDA (Personal Digital Assistant), so phones that contain everything a worker in the business may need: email, address book and phone numbers, etc.