Yes the current towers for wimax only need software upgrade to use lte. But phones like evo that originally used wimax can never use lte as it requires an lte chip that comes built in to the phone which the evo doesn't have. Good news is that when sprint switches to lte they will leave wimax running also. So there will probably be dual lte, wimax phones that will take advantage of all that 4g coverage. Sprint has a chance to have a huge 4g footprint not to mention they are working on the newest push to talk technology. I can't wait.
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