Turn off 4G in your Verizon USB Modem (aircard, mobile broadband internet)

I have a few users with the new Pantech 4G LTE UML290 USB modems from Verizon. Some of the users are in locations with very weak 4G signals. It's constantly dropping the connection.  One tip from Verizon tech support was to disable the 4G service in the device and just allow it to connect to the 3G network which will hopefully provide a more stable signal and not disconnect them constantly. This should also work on other Verizon 4G LTE devices from LG and Verizon (such as the Verizon 551L and LG VL600).

Here are the steps:

1. Launch VZ Access Manager but don't connect
2. Press Ctrl-D to launch the "hidden" system settings window
3. The password is diagvzw
4. Select "Settings" from the menu
5. In the "Preferred operating mode" section, change it from Global to "Auto CDMA"
6. Close out of VZ Access Manager and relaunch it

Now you will always connect only to the 3G network.  You'll need to repeat these steps and go back to "Global" if you want to re-enable 4G mode.

And it's usually a good idea to always check for updates within VZ Access Manager - it will update the VZ software, Windows drivers, device firmware, etc.