Apple held three of the top four device spots for ad impressions served in Millennial Media's second quarter Mobile Mix report.
According to the report, Apple was the leading manufacturer on Millennial's platform with the iPhone serving up the most ad impressions, followed by the Samsung Galaxy S in second place, with the iPad and the iPod Touch falling in third and fourth places respectively.
Overall, Apple made up 42 percent of total impressions in second quarter, which is up from 34 percent of total impressions in Q2 2012. During the same time period, Android increased share from 46 percent to 51 percent.
Samsung had three devices in the top 10. The Samsung Galaxy Note in particular grew 44 percent quarter-over-quarter. Apple still managed to grab the lion's share of tablet impressions with 55 percent overall. Android tablet impression were 44 percent of the total.
Smartphones accounted for 70 percent of total platform impressions in the second quarter 2013, which was flat on a sequential basis.