All Verizon and Sprint EVDO modems have a Preferred Roaming List (or PRL) embedded in the card.
Tap the red "End" key to exit to the phone's home screen.The PRL is built by an operator and is normally not accessible to the user.Many operators provide the ability for the user to download the latest PRL to their device by dialing an Over-the-air (OTA) feature code.This allows the phone to choose the best roaming carriers, particularly "roaming partners" with whom the home carrier has a cost-saving roaming agreement, rather than using non-affiliated carriers.PRL files can also be used to identify home networks along with roaming partners, thus making the PRL an actual list that determines the total coverage of the subscriber, both home and roaming coverage.Press the "End" key to exit to the phone's home screen.
Touch "Settings" and select "General." Touch "Update PRL" and wait for the update to complete.
Updates can be performed directly from your phone's handset.
The steps might vary slightly depending on your phone's model.
If there is no update available, press the "Menu/OK" key.
Touch the "End" phone key to exit to the phone's home screen.
My father in law just got the 4082 and has not been able to update the prl.