It would'nt hurt to run the carrier cab.
Then double check the settings in:
"Start/Settings/Connections/Cannections/General(at the bottom), and make sure it says "Verizon Wireless".
If not, Deleet Settings.
If it does say Verizon Wireless, then tap "Modem"
Select "Data Network Connect", tap edit, make sure it says "Celluar Line" for Modem.
Tap next, see #777, Next, and enter
your#@vzw3g.com, (User Name) VZW, (Password), then finish.
Not too long ago, a level 3 tech at VZW had me enter "BroadBandAccess", instead of "Data Network Connect". The reason was that my username & password would dissapear. That fixed that.
So now I keep both of them on there, and swich now and then.
Hope it helps.