While more than 50% of mobile phone users in the U.S are smartphone users according to comScore, most phones sporting a 4G antenna are pricier than their 3G counterparts. Examining smartphone Web usage across North America, Chitika Insights found that 4G phones contribute to about 30% of the total traffic from all North American smartphones. Within the 4G group, users of newer phones, specifically released after July 2012, generated 53% of continental 4G smartphone traffic.