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Happy birthday, dear Global System for Mobile Communications! 20 years ago today, on July 1 1991, the world's first GSM call was made by Finnish Prime Minister Harri Holkeri. The historic call used Nokia gear on GSM's original 900MHz band. Today GSM is all grown up and ruling the world -- con

3 years ago 0 Comments
July 1, 2011 at 5:48AM