[ppcg-Clayton]

What are the legal problems with changing the ESN/MEID on the phone itself?

It sounds like a MAC address on a network card and I've had an ISP that controlled access to their network by the MAC address. Many NAT routers and network cards let you set the MAC address and that's how I was able to change from router to router back when I was with that ISP (cable ISP - Charter Communications). It was just so much easier than calling tech support and having them enter a new MAC address into their system. Changing the MAC was just another option in the settings of the routers. No weird/hacky software or anything.

I've just started struggling to get a Sprint Treo Pro activated on the Verizon network and am looking for options.