China Mobile is wise to focus on edge and therefore fairly constrained locations for its first steps into network slicing – the allocation of network resources to specific applications or customers. Many of the most-vaunted applications for 5G, especially in Industrial IoT and vehicular services, will not work until there is truly ubiquitous coverage, and that is still years away for all but the smallest, densest countries (such as Singapore). Some 5G industrial applications are clearly localized, such as those for smart cities or a specific manufacturing complex, but many of the services where 5G is most meaningful – as opposed to WiFi or wireline – are inherently mobile and wide area, drawing on the unique qualities of a cellular…