(screenshot from James Kendrick’s blog entry)
I had this problems a couple of years ago when Verizon upgraded southern Rhode Island from 1xRTT to 1xEV-DO. I would constantly bounce between 1xRTT and 1xEV-DO, and couldn’t maintain a stable connection, so the service became useless and I canceled (I was out of contract at the time). James Kendrick has found some hidden settings that force it to operate in one mode or the other.
I spoke with someone who wishes to remain anonymous who showed me how to do what I needed to see if it would fix my problem. Open up the Verizon Access Manager program and while disconnected from the network hit CTRL-D. Enter the password “diagvzw” in the dialog that pops up and you’ll see a dialog where you can change a couple of modem settings.
Read all about it for complete details and the results. Link