According to comScore's latest analysis of the U.S. mobile market, Android has grown significantly in the period from February to May 2010, while all other major operating systems experienced a drop in their market share.

In this period, RIM was still the leading mobile smartphone platform, dropping from 42.1% to 41.7% market share. It was followed by Apple which somewhat surprisingly dropped from 25.4% to 24.4% and Microsoft which dropped from 15.1% to 13.2%. Android was fourth on the list, but it rose from 9% to 13% market share in this same period. It was followed by Palm which dropped from 5.4% to 4.8% market share.

One has to take into account that these numbers are relative; most smartphone platforms actually gained subscribers as the smartphone market overall grew 8.1%, with 49.1 million people in the U.S. owning smartphones during this period. Still, Android is growing faster - much faster - than its competitors at this point.







As far as top mobile manufacturers go, Samsung grabbed the first place, growing from 21.4% to 22.4% market share. It was followed by LG, RIM, Motorola and Nokia, all of which lost a small chunk of their share, with the exception of RIM which grew from 8.2% to 8.7%.

See comScore's report here.