I'll probably need to look for old posts so I can say which nam? I used. But this was an Eco4 G set up to work on Boost. It actually worked great but memory warnings and a 99 dollar price eventuly had me switch to the Desire. That was a disaster. But like the Desire that I wrote about elsewhere today, the Eco is like new. But it is plagued by the same problem as the Desire: it still thinks it's a Boost phone. Unlike the Desire there is no SIM card. A boost dealer suggested resetting it to factory setting. I think that might brick the phone since in order to get it to work on Boost the system thinks it's something other than an Evo This phone is still head and shoulder better than all of my new phones. Is there a way to get it to just be an Evo with no carrier affiliation?