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"Nokia unveils the budget 3G Lumia 630 and 4G Lumia 635 smartphones"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/microsoft/2014/04/02/nokia-unveils-budget-3g-lumia-630-4g-lte-lumia-635-smartphones/lumz/>