The overwhelmingly rising numbers aren't limited to just touch-screens; it appears as if smartphone usages in general is growing throughout the United States. From August 2008 to August 2009, the number of smartphone users grew by 63%. In August 2008, there were about 20.7 million people using smartphones compared to over 33.7 in August 2009.
So what was the most popular phone? Not surprisingly, it was the iPhone, of course. With 32.9% of the touch-screen market using an iPhone, it was the top device for users ages 13 and older. With 8.7% was the LG Dare came in at a distant second. Other ranking touch-screen phones included the LG Voyager (7.8%), BlackBerry Storm (7%), and the Palm Treo (6.5%).
Another interesting tidbit ComScore found was that touch-screen users tend to be younger than standard cell phone users. Over half (51.4%) of smartphone users are under the age of 35, with a whopping 57.7% of touch-screen users being in the same age range. About 20.6% of touch-screen users are between the ages of 18 and 24, while only 5% of touch-screen users are over 65.