There has been massive growth in smartphone sales in the past few years. Ever since the introduction of iPhone, Android, and smartphone applications like Facebook, Twitter, WhatsApp and Viber, even common people are experiencing a strong urge to use smartphones instead of feature phones.
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Granted, there are still a few number of feature phones being produced by the likes of Microsoft (the Nokia 215, above, is a good example), but smartphones are slowly becoming more affordable and more powerful lower down the economic spectrum.
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