1. Nokia Lumia 900
Nokia charges back into the smartphone market with a portfolio of Windows Phones led by the Lumia 900, a somewhat larger version of the overseas Lumia 800 model. Polycarbonate never looked so good. The 900 additions: the larger, 4.3-inch screen (as with the 800: AMOLED, at 800 x 480 resolution); support for LTE/4G cellular. The Qualcomm 1.4GHz CPU and 512MB of RAM should make Windows Phone 7.5 just as quick and smooth as it is on the 800 and 710 models.