Among the established mobile vendors, Samsung has the most to gain from Huawei’s and ZTE’s challenges in US-allied markets, and it is building on the opportunity with the acquisition of US-based network supplier TeleWorld Solutions (TWS). Always a minor player in mobile infrastructure outside South Korea, it has built on its extensive developments in millimeter wave technologies – and its legacy WiMAX installed base – to seize a significant share of the first phase of US 5G deployments. With Huawei and ZTE out of the picture, it has been a supplier to Verizon, AT&T and its old customer Sprint – all of them reluctant to see their RAN choices reduced to two vendors, but as yet nervous of introducing new…