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Millennial Media, an independent mobile advertising platform, reflected on 2012 mobile trends and a few things stood out: The surging growth of Samsung and the popularity of the iPad mini.

Looking at overall share of Android devices accessing apps using Millennial’s mobile ad platform, Samsung held 46 percent of impressions overall among Android devices in Q3 2012. That’s a huge increase from 23 percent in Q3 2011. The South Korean company is now 30 percentage points ahead of the second leading Android manufacturer, HTC.

It’s just more good news for Samsung, who recently dethroned Nokia for the most cellphone shipments in 2012.

The iPad mini saw similar success, as initial impressions grew at an average rate of 28 percent per day. Meanwhile, original iPad impressions continue to grow at 35 times the volume of the iPad mini hits.

Millennial also found that more advertising dollars are going toward mobile devices. The automotive industry grew the most on Millennial’s network with a 318 percent increase in spending compared to 2011. Travel, sports and education all saw over 220 percent increases in mobile ad budgets.

See the full infographic here.

Previously on GeekWire: Tablet prediction: Microsoft to steal some thunder from Android and iPad by 2016

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