Verizon now supports VoLTE devices with no CDMA including certain GSM/WCDMA/LTE iPhones. If you can set the Verizon SIM to LTE only you shouldn't have any problem. Non-CDMA phones on Verizon even get provisioned automatically to roam on ATT HSPA+ in several areas where CDMA/LTE Verizon phones don't, probably in anticipation of the CDMA network shutdown.
That's why I'm confused. The order said Gen 2 (CPO was in the description so thinking it is Certified Pre Owned?) but my Sprint Account says Gen 3. I checked in the box and it says AU544, so I want to say it's a Gen 2.
My device on my account says Airspan Magic Box Gen 3, does that mean I received a Gen 3? I ordered it on Sunday 9/16/18 and received it today 9/19/18 but my wife won't let me open it until the weekend. The label has the AU545/U545 numbers on the cardboard box which I found it saying that it is Gen 2. Is the Gen 3 the only one with 2 USB ports for charging other devices?