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.jpg "Evolution of Mobile Phones: 1995 - 2012 - Hongkiat")
Evolution of Mobile Phones: 1995 - 2012 - Hongkiat
Cell phone history: From the first phone to today's smartphone wonders
When did smartphones become popular? - Quora
Smartphones Twice as Popular as PCs for Going Online; The Fastest-Growing Mobile Ad Formats - ExchangeWire.com
