"""<p> <b>A girl tests out the new Nokia N8 mobile phone at the Nokia Flagship store in Helsinki.</b> </p><p> Nokia, the world&#39;s top cellphone maker, said on Friday some of its flagship N8 smartphones were sold with a power fault that meant they switched themselves off. </p><p> The success of the N8-Nokia&#39;s first real challenge to Apple&#39;s iPhone, more than three years after its launch --is seen as crucial to Nokia&#39;s profit margins in the current quarter, analysts say. </p><p> Nokia sales chief Niklas Savander said \""""a limited number of N8 users\"""" were facing the problem of their phones switching off, and they are not able to turn them on again. </p>"""
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