Mobile operators in the United States raked in second quarter 2012 data revenues of $19.3 billion, up 5 percent quarter-over-quarter and a 19 percent year-over-year increase, according to new research from Chetan Sharma Consulting. The firm adds that data now represents close to 42 percent of all U.S. mobile industry service revenues, and remains on pace to eclipse the $80 billion mark this year. Verizon Wireless (NYSE:VZ) and AT&T Mobility (NYSE:T) combined to generate 68 percent of U.S. mobile data services revenues during the second quarter. Article