The Apple iPhone, which has been setting the bar in touch-screen smartphones, could soon be overtaken by an army of Google-powered handsets.
Android-based phones – handsets that use the open source Google mobile operating system – are on the march as non-iPhone carriers look for a rival to Apple's device.
Since its introduction a year ago on one device with one carrier, Android has come a long way. It is used on 12 handsets with 32 carriers in 26 countries.
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