As most are aware both the LTE network and eHPRD are down (a special version of 3G for the Thunderbolt only). To get 3G data back you just need to change your settings back to the normal 3G network. Here are the steps:
Dial ##778# and hit send
A pop-up window named EPST will show up giving you 2 choices: View Mode and Edit Mode. Pick: Edit Mode.
Enter the Password: 000000
Go down to Modem Settings and pick “Rev A“
You’ll want to choose enable and click OK, hit the menu button and then press “Commit Modifications.”
Restart your phone and you should see 3G is working
Then you can use either the Phone Info or LTE OnOff app to set the preferred network type to CDMA auto (PRL) to maintain a steady 3G connection, i.e. to keep the phone from cycling through its options and thereby temporarily dropping the connection. And once the LTE network is back online, you can set it back to CDMA + LTE/EvDo auto.
I'm not sure the benefit of eHPRD, so I'm not sure why I'd want to turn it back on ever again.
I did these two steps and got 3G back. Thanks all!
I think someone mentioned this already. Since I don't live in an area with 4G do you think I can activate eHPRD when its back up again and just leave it in CDMA auto (PRL) to maintain it? Then whenever I am in a 4G area I can go back to Phone Info and switch to CDMA + LTE/EvDo auto and connect to 4G...would this work?
Not necessary to change back to eHRPD. See my previous post. 4G works fine still with rev a selected.
Sent from my Thunderbolt
Actually there is a point to eHRPD, if u want to use simultaneous voice and data then that is the optimized network that allows for it. Also I believe that it switches to 4G and back faster than the regular 3g network.