Mention the words USA and mobile, and 5G inevitably springs to mind. But of course, even as the USA fights China and Korea to be the ‘world’s leading 5G nation’, and the US MNOs battle to be first in that race, most of the attention is still on LTE. In particular, the big four operators need to fend off challenges from smaller players and the cablecos, as well as one another – and the focus of that is increasingly not primarily on conventional mobile services. Instead, it is on using new sources of spectrum, whether 4G or 5G, to add fixed wireless to the mobile services in order to deliver a quad play service. This will help mobile-only players like…