RIM-900
From Infogalactic: the planetary knowledge core
The RIM-900 was one of the first wireless data devices, marketed as a two-way pager. It operated on the Mobitex network. It was a clam shell device that could fit on your belt. It had a small QWERTY keyboard for sending and receiving email and interactive messages.
The product was introduced as Inter@ctive Paging in 1996 by Research in Motion and RAM Mobile Data.[1]
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