In the March “Mobile Mix Report” ( from Millennial Media, the Verizon iPhone helped spur an 11% month-over-month growth for iOS, and the influx of new tablet devices contributed to a 21% month-over-month growth for connected devices as a category.

“With the recent release of the iPad 2 and the upcoming release of the BlackBerry Playbook — we anticipate connected devices will continue to grow,” says Mack McKelvey, senior vice president of marketing for Millennial Media, a mobile advertising platform.

Android remained the leading smartphone OS on the platform’s network for the fourth consecutive month with a 48% impression share. However, iOS apps represented a 47% share in the Application Platform Mix of the March “Mobile Mix Report.”

— Dennis Sellers