Instead of creating a new thread I decided to bump yours.
While I still have unlimited data on Verizon, I know it won't last forever, so I bought a SIM and activated it on the $30/mo plan. Today is the first day with it, and while I don't get coverage at work which I already knew, GPRS and EDGE seem to work, just very, very slowly. I went into an LTE area and I did not have LTE, but had HSPA+ and as I drove away it switched to HSPA, then back to EDGE. While on HSPA+ I ran two speed tests, pings were around 60ms but the download speed was about 1-1.5Mbps, and upload was well under 1Mbps.
I'm running CM 10.2 (CM11 has BT issues for me), does anyone else use their Verizon phone on T-Mobile and gets better speeds? Last year I bought a Nexus 4 and in a close location I got 15-20Mbps on HSPA+, so I think it's something with this phone.
I also noticed that despite being connected to GPRS, EDGE, or HSPA+ in about phone it says the signal strength is -120dBm and doesn't move.