By David Ponce
The Nokia Lumia 900 is the Finnish giant’s latest hope to placate the iPhone’s dominance on the marketplace. It’s a solid device, which has received mostly positive reviews, if not rabidly glowing ones. If you’re going to buy something other than Apple’s famous little mobile, the Lumia 900 is not a bad choice indeed. And Nokia priced it pretty aggressively to compete with the iPhone, usually charging customers $99 with a two-year contract through AT&T. But today’s deal has it sitting at $50, or even $20 if you’re a current customer who’s renewing a contract.