Some very interesting data coming out of ComScore today compliments of their MobiLens service. The numbers come from a survey of over 30,000 US mobile phone users in the three months leading up to February 2012.

They provide a comparison between February 2011 and February 2012, in which smartphone usage climbed to 50% for the first time ever. They found Samsung to be the most popular device, with over 25% of the population using them. Next was LG with who had about a 20% market share, followed by Apple who had over 13%. Motorola and HTC held 12.8% and 6.3% respectively.

Of course, most used the Google Android platform at just over 50%, followed by Apple iOS at about 30%. Just over 13% were using RIM, and 3.9% used the Microsoft operating system. Finally, 1.5% used the Symbian system.

On their behavior on the phone, about 75% of users sent text messages, almost 50% used downloaded apps, just short of 50% used a browser to surf the web, and 36% used their phones to access social networking sites.

For all those media enthusiasts out there, about one quarter of smartphone users took advantage of their devices for gaming and listening to music. I really thought this number would be higher.

Anyway, those are the user trends in smartphones for the three months leading up to February 2012. Smartphone usage has reached 50% of the US population and it’s predicted to continue climbing throughout 2012.