It'll be a while before there's a complete switchover. While Verizon's LTE service is pervasive enough that it's finally letting prepaid phones in on the action, about 41 percent of the devices on its network don't have LTE at all. Big Red is more likely to scale back CDMA and EV-DO as demand goes down, and cut them off only when it's sure that almost every device is 4G-ready. As it stands, you won't see quicker, more reliable service until Verizon has gear that supports LTE on the 1,900MHz band. Like it or not, your Droid Turbo isn't going to download files any faster when 3G goes away.