Flash the CDMA chip and the like over so it works with them. Friend of mine took an LG Chocolate 2 to Cricket and they flashed it over to their network. I don't know exactly how it works cause I've never used them before nor have I had a phone's internal firmware flashed
You say AT&T and Verizon suck in Madison, WI? Hm. Family and friends that I know who live in Madison say they have no complaints with AT&T or Verizon, or Sprint even. So you're either lying or are a viral marketer for US Cellular
In the city, ATT/Verizon are fine. Get less than 30 miles away, towards Baraboo, for example, and the only phone that will get a decent signal (if any at all) is a US Cellular phone. Same out in western Wisconsin.
I had US Cellular in 2003-04 and left them when I started traveling nationwide for work -- I made more than 50% of my calls one quarter from outside their area and was threatened by phone and by letter that they could terminate my service. And I moved myself and they waived the early termination fee.
Been with AT&T since just before the first iPhone. I hate AT&T sometimes, but most often I get adequate voice service. It's just that it *would* be better to have a US Cellular phone in most rural/suburban areas of Wisconsin.