They had a problem with the signal interfering with another company in canada(i think rogers) from what i was told. Put a stop to the 4g here in detroit, and i think buffalo as well(they were trying to release it all the same day, something to do with football, i forget exactly what) In the end, the company they were paying for the Wimax ran out of $, and they are switching to LTE. This is what a customer of mine who has ~15 sprint stores told me the other day when I was bitching. Can't wait for my contract to be up. Can't even use my phone in my house at all. Friends with metro pcs, verizon, even ATT have no issues at all, even in the basement. Hope sprint goes under, and the executives get crabs.