Striving to play catch-up with Verizon, AT&T has doubled the reach of its LTE network since a year ago. The carrier's 4G LTE network now covers more than 150 million people across the U.S., double the number at the end of last year. With its roll out ahead of schedule, AT&T aims to reach 250 million people by the end of next year and 300 million by the end of 2014. AT&T's LTE network is currently available in 103 markets scattered around the country. This week was another busy one for the company as it added several new markets to its lineup. Read the full story at CNET.