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Samsung, Nokia launch new smartphones

Nokia and Samsung have introduced new cheaper smartphone models, stepping up their battle against world's largest smartphone vendor by volume, Apple, Reuters has reported. Sources have said that the US firm is set to launch a lower-cost version of the iPhone 4 soon. Samsung introduced four new smartphone models under its Galaxy line on Wednesday, expanding its flagship product line to cheaper phones to tap growth in emerging markets. Nokia has launched unveiled three new mass-market smartphone models which will use a new version of its Symbian software which the Finnish firm has decided to dump in favour of Microsoft software.