Dial ##778# then select edit mode. The password is 000000. Scroll down to modem settings. Select Rev.A. Select "enable" and click ok. Then hit the menu button and click commit changes. Your phone will reboot.
Once VZW fixes the issue (most likely will be included in the next ota update) you will want to set it back to eHRPD, but for the time being, this fix seems to work for most people. Give it a shot. If nothing else you can always revert to the stock settings.
Sent from my ADR6400L using DroidForums