Hello LinuxNoob; Around last December we covered this topic extensively. We were Ubuntu Central for a while. The message base is still there.
Things may have changed since then, but to my recollection here was the upshot:
1. Verizon hasn't produced a linux version of Access Manager and probably won't.
2. Access Manager is the only program that enables the Pantech 290 to switch between 3 & 4G signals.
3. I (and everybody else) got Ubuntu to work with the Pantech with minor tweeks - In solid 4G AREAS
4. If you're in a 3G area you'll have to do a firmware fix that locks the modem down to 3G only (but can void your warrenty)
Reading over your details it looks like #4 needs your attention; The settings in Access Manager (at that time) didn't do the trick to lock out 4G. It was more complicated than that. You actually had to disable 4G. Let me find that message and I'll get back to you.
Have to add this little note just in case somebody else runs across this.
After I got my Pantech UML290VW to work in Ubuntu 11.04.1 64 bit, I decided what the heck go out and buy the new cradlepoint router down at th verizon store and see if I can get this to work on my other two Windows PCs(Win 7 and XP) and perhaps the new LG Network Blu-ray Disc Home Theather System I picked up this weekend that the wife says is a waste of money.
After I used your solution and verified that I could connect using Ubuntu and Linux Mint 11, I connected the cradlepoint router to my Toshiba Tecra and tried to get it to work. No luck (sigh). So I decided to go back and set the Pantech UML290VW back to "Global" which is contrary to http://www.evdoinfo.com/content/view/3492/64/ . FYI ... I'm in a 3G area. I tested and lo and behold the Toshiba Tecra with Win7 worked fine. I then loaded up my Dell E6410 and it worked too. Next I powered up the beast (OPTIPLEZX GX620) with my Linux installs expecting to be denied again BECAUSE I CHANGED ONE OF THE SETTINGS (CDMA/HDR Only to GLOBAL) but NOOOO. It works like a charm. All three PCs - no issues. Hmmm. I think it's because of the down rev update "rev A" shown in http://www.evdoinfo.com/content/view/3492/64/ .
I had something like EV - Rev Ae or something like that
Below are the instructions to set your Verizon modem to 4G-only or 3G-only mode:
- Open VZAccess Manager with your card inserted, but do NOT connect to the internet.
- Hold Control + D on your keyboard
- You will be prompted to enter a password. Enter "diagvzw" (without the quotes)
- Select "settings" from the menu
- In the for "preferred operating mode" section, select "LTE Only" if you are in a 4G area or "HDR Only (EVDO)" if you are in a 3G area, as shown below. This is the only setting that should be changed! Then hit "OK".
Time to see how fast I burn up the 10gigs/mo allowance with 3 PCs online.