Sprint Keeps WiMax Running for a Few Customers, Pulls Plug for Most | Re/code

Sprint Keeps WiMax Network Up to Comply With Court Order, Deactivates Most Users

Pre LTE, Sprint was the first to have a true 4G network thanks to its adoption of WiMax.

http://recode.net/2015/11/07/sprint-keeps-wimax-network-up-to-comply-with-court-order-deactivates-most-users/