Special Report: A look at the wireless industry's shuttered networks: From CDPD to iDEN to CDMA to WiMAX

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Network shutdowns are a way of life in the wireless industry, as technologies evolve and advance, and one era gives way to the next. U.S. wireless carriers and others have been shutting down legacy networks for more than a decade and the shuttering will continue this year.

Wireless carriers shut down legacy networks for a variety of reasons. Sometimes, it's simply that newer and more advanced technologies have arrived and customers no longer use the older ones. Other times carriers inherit legacy networks and look to shut them down for cost savings. Many operators refarm spectrum that had been dedicated to older services and repurpose the airwaves for newer ones.

FierceWireless has compiled a list to show when and why U.S. carriers and others have consigned certain network technologies to the scrap heap of history while remembering what the networks were used for in the first place. Report

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