[bpd138]

I was able to get my AT&T sim card to work on my Verizon HTC Toutch Pro 2.
Heres what I did;
I called Verizon and told them I was going to England for a vacation and wanted to use my phone over there. The customer service rep said she needed a number off my sim card and that they had to do something at their end. I told her that I wanted to use pre paid sim cards. She said, "oh, you just need and unlock code. Give me a second and I will get it for you". She gave me the unlock code and walked me through the process to unlock the phone. When I got off the phone with her I removed my verizon sim card and inserted my AT&T card. Did a soft reset went to network settings and changed the setting from [Global] to GSM. Hit [Find Networks] and in a few seconds it connected to the AT&T network. I was able to make phone calls and text. However my data connection wouldn't connect. I should say that my AT&T sim card was a data only one for a wireless air card. I don't see why it wouldn't work with a voice plan.
So there you have it.