Cricket became the next US carrier to switch on LTE on Wednesday with a launch in Tucson. Its 4G network is estimated to run about five to ten times faster than its EVDO-based 3G. In an unusual step, Cricket keeps the 5GB cap the same and bases price on speed: a $50 plan provides a more 3G-like 3Mbps, while subscribers need to pay $60 to get 6Mbps.