Most of the 5G buzz in the USA is around the three national MNOs and newcomer Dish, but regional provider US Cellular – the fourth largest MNO – is already preparing its 5G Standalone build-out, and aims to have its cloud-native core, supplied by Nokia, commercially active by the end of next year. US Cellular, which has 5m subscribers, already gets sub-6 GHz and millimeter wave 5G RAN equipment from Nokia, but like most operators, has been deploying in Non-standalone mode with the existing 4G core. Now Nokia will provide hardware, software and services for 5G Standalone, and US Cellular may even leap ahead of AT&T and Verizon in turning on SA, though T-Mobile USA has already done that across…