How will 4g phones operate in areas that don't have 4G coverage initially?
Don't know. Maybe without an inserted SIM card, data will run off the CDMA radio. But as far as I know, that's how they are handling their data/voice.
Sent from my Droid
I would have thought that if there was no 4G signal then the phone would switch back to the CDMA radio for 3G.
I believe that is correct.