AT&T may take advantage of its last days of iPhone exclusivity to reclaim the top spot in US carriers by next year, IE Market Research said today in a new study. AT&T's higher growth rate over its rival Verizon in the spring was a sign to analysts that it should claim the lead by spring 2011. By 2014, AT&T would still have a comfortable lead with 34.8 percent of the market versus Verizon's 32.5 percent.
