E network to 74 million people in 28 cities,597 and by September 2012, AT&T announced that it has LTE coverage in 63 markets, utilizing approximately 20 megahertz in most of those.598 AT&T has stated that it expedited its rollout of LTE by a year in order to compete with other firms on the basis of network speeds and because LTE is a more spectrally efficient technology than those on the UMTS/HSPA