A new Chitika look has shown that the Verizon iPhone is starting to eat sharply into that carrier's dominance of Android. At over 51 percent just in March, Verizon's share of all US phones using Google's OS is now down to 41 percent as of August. With Sprint and T-Mobile flat, most of the shift went into AT&T's 8.7, where its first high-end Android phones like the HTC Inspire 4G and Motorola Atrix helped draw users in.