NEW YORK ( TheStreet) -- A few years ago, the Sidekick smartphone was the messaging device for youngsters. After watching pairs of Sidekick users sit next to each other on city busses and text each other via their phones, it was clear that talking had become passe.Fast forward to 2011: The mobile world is ruled by superphones like Google (GOOG - Get Report) Androids, Apple (AAPL) iPhones and a few Research In Motion (RIMM) BlackBerries. The Sidekick has lost its relevance.
T-Mobile Sidekick 4G: Gadget Review
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