Text messaging, cellphone videos and social-networking sites all played a critical role in helping activists organize the Green Movement around Iran's 2009 elections.

WSJ: U.S. Eases Tech Exports to Help Iranian Dissenters

Its only product was a free voice- and text-messaging service for cellphone users.

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Its Globe Telecom affiliate pioneered in text-messaging and became the cellphone leader.

CNN: Asia's Memory Lapse

As wireless customers spend less money on plain-vanilla cellphone voice calls, carriers are betting that data and entertainment services like text messaging, over-the-air music stores, streaming video and mobile Web browsing will lead growth.

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