April Mobile Mix Highlights:

• Android ad requests grew 77% month over month. Since January, Android has grown 282%.
• RIM remained the second largest OS on our network for the ninth consecutive month with a 3% increase month-over-month and a 17% share of impressions.
• Although the Apple OS had a month-over-month decrease of 8% it still remained the leading OS on our network in April with 62% share of Smartphone impressions.
• Android Smartphone manufacturer, HTC, entered the top five this month for the first time and represented the largest increase within the Top 15 Manufacturers in April with a 2.5% impression share increase month-over-month.
• The Touch & QWERTY category experienced the largest amount of growth within the Device Input Mix and represented approximately 8% of our network’s impressions in April.

The full report is available here

For a full list of reports: http://www.millennialmedia.com/research/