The iPhone 4 and iPhone 3GS held on as the US' bestselling smartphones during the third quarter of 2011, according to new NPD Group data. Following behind in the top five were two Android-based phones -- the HTC EVO 4G and the Motorola Droid 3 -- as well as the Samsung Intensity II, which NPD classifies as a smartphone even though the device is more basic than most. The updated top phone list is almost identical to one for Q2, the only difference being the Droid 3 replacing the HTC Inspire 4G.
