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Between 1996 and 2004, Research in Motion (RIM, Waterloo, Ontario) released several generations of wireless communications devices: the Inter@ctive 800, 900, 850, and 950 two-way pagers, the RIM Wireless Handsets 857 and 957 as well as the BlackBerry…

Historical ContextIn the last decade of the 20th century, rapidly developing wireless communications infrastructure introduced millions of users to wireless data and voice communications using pagers and cellular phones (cellphones). At that time, it…