Research firm Ofcom recently released its annual Communications Market Report that surveyed 2,073 adults and 512 teenagers in the United Kingdom. The results revealed that 32% of adults preferred using the iPhone as their primary handset while 37% percent of teens chose to carry a BlackBerry smartphone. Ofcom didn’t reveal whether it was cost or feature sets that drove the preference, however. The firm also found that 37% of adults considered themselves “addicted” to their smartphones while 60% of teenagers admitted being addicted. What was the most visited website on a smartphone? Facebook clocked in 43 million hours of usage in December 2010 alone, according to the firm.