Millennial Media is one of the largest ad networks in mobile, and its monthly stat shot is an indicator of who is doing what in mobile. The July report shows some interesting numbers that indicate the state of the mobile space.
Android retains the number one position among mobile platforms for the eighth consecutive month with 61 percent of all ad impressions served. Apple's iOS was the next most used mobile platform with 21 percent of impressions. Apple is still the number one mobile manufacturer with 26.45 percent of the market and Samsung number two with 19.11 percent. Note these numbers are based on ad impressions served during the month of July 2011 and not device sales.
Windows Phone 7 generated only 2 percent of ad impressions during the month, but encouragingly had a 71 percent increase month-over-month. The indicates that more of these phones are in the market each month, and with Mango due to launch soon WP7 could be poised for good growth.
While tracking the number of ad impressions paints a good picture of activity, it is important for developers to follow the money. Things stack up differently when ad revenue is tracked by platform with Android nudging iOS for the top spot but by only five percent. These two platforms accounted for a whopping 91 percent of ad spends, with RIM's BlackBerry a distant third with only 7 percent.