According to AdMob's October mobile metrics report, the iPhone and Android phones made up 75 percent of web traffic for mobile phones in the United States, up 10 percent from the previous month.

The iPhone sits ahead of Android based phones at 55 percent, though Android phones are quickly catching up. iPhone gained a 7 percent increase in traffic in October to 55 percent. Globally, iPhone's operating system now accounts for 50 percent of all mobile traffic, up from 43 percent in September.