The introduction of the iPhone 4S enabled Apple to surpass Samsung Electronics as the world's top smartphone-maker in the fourth quarter, according to Gartner, but the research firm warned that Apple would likely slip in succeeding periods as the novelty of its new handset wears off. Overall smartphone sales soared 47% from the year-earlier period as Apple grabbed a 23.8% share. Nokia retained its global cellphone edge when feature phone and smartphone numbers were tallied together but saw its lead shrink as Samsung grew.

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Reuters, ZDNet, ZDNet

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