Millennial Media today released its January Scorecard for Mobile Advertising Reach and Targeting (SMART). The firm released the metrics a bit later than normal, as it issued a Year in Review SMART earlier in February and didn’t want to confuse the year-end stats with January data.

According to the report, Apple remained the No. 1 device manufacturer with a 36.22 percent share of impressions in January. That’s the largest percentage share since the first SMART report was published in March 2009.

Three new devices entered the Top 10 in January: the Motorola Clutch, Samsung Freeform and Samsung Messanger II. Two LG devices entered the Top 15: the LG VX5500 and the LG enV Touch. 

Qwerty keyboards remained hot. Within the Device Input Mix, qwerty experienced the largest increase, or 16.59 percent, and represented 37.56 percent of impressions in January.

A very close second within the Device Input Mix was the touch screen category with a 36.32 percent share of impressions.

In the U.S. Smartphone OS Mix, smartphones represented 58 percent of Millennial’s network impressions in January. That represents a 20 percent increase month-over-month. 

Millennial found that more than 77 percent of smartphone impressions in the U.S. were from either the iPhone or RIM OS.