Microsoft, Nokia unveil new Lumia as mobile race revs up - Reuters | Technological Sparks |

Nokia and Microsoft Corp took the wraps off their most powerful smartphone on Wednesday, but the new Lumia failed to impress investors, and shares of Nokia, which once dominated the cellphone market, plummeted 13 percent.

The Finnish company and the world's largest software maker showcased the device on Wednesday in what may be their last major shot at reclaiming a market lost to Apple, Samsung and Google.