Why can't I use my Obama Phone with Verizon?

Episode 1597
John fromJohn got an "Obama Phone" with AirVoice Wireless. When he got a new Motorola Moto Phone that was unlocked, it says it uses GSM or LTE. And AirVoice Wireless only uses Verizon. Can he use the phone? Leo says that Verizon is CDMA, so a GSM phone won't work. But AirVoice also says they're an AT&T carrier. From the chatroom - input the APN settings listed here and it needs to be a phone that works with AT&T. https://apn.gishan.net/en/apn/airvoice/motorola-moto-g-4g-2nd-gen