Changed build.prop as advised:
# BEGIN Motorola, qmfd78, 14-Jul-2010, IKMAIN-884
# GSM SMS traffic needs to be routed/sent through North America SMSC.
# This is part of the VZW World-phone Feature. SMS are always sent to a US SMSC and then injected
# into that network. This allows for billing and give the user the impression that the device is
# still in the US.
ro.telephony.gsm-routes-us-smsc = 1
# END Motorola, qmfd78, 14-Jul-2010, IKMAIN-884
Inserted active AT&T MicroSIM with iPhone unlimited data plan.
Changed Preferred Network Type in Phone info to WCDMA preferred. Let the phone sit for ten minutes.
Now I have an angry RAZR MAXX HD, scanning for service continuously. Phone status shows no network type, signal, nada. Angry phone is angry. Rolled back changes.
Good try, but we are not living in the OG Droid era anymore.