VERIZON WIRELESS TO END SUPPORT FOR CDMA ONLY DEVICES. A recent memo went out to Verizon’s distribution confirming that CDMA only devices will not work after December 31, 2019. After that date, (Jan. 1, 2020) all devices must be VoLTE and HD voice capable. In addition, beginning July 1, 2018 (this year) dealers will “No longer be able to activate any CDMA data only devices, and any non HD/Volte phone devices, including swaps.”cdma fixed wireless phone Therefore, dealers will not be able to downgrade an existing device to 4G LTE/3G rate plans or swap to a 4G non HD Voice phone. Nor can they downgrade an existing data only device to 3G rate plans or a 3G device. Only HD Voice Smartphones and 4G LTE data only Verizon Wireless certified devices may be activated on the Verizon Wireless network. This includes device swaps. Only HD Voice Smartphones and 4G LTE data only IMEI uploads will be accepted to the Verizon Wireless Device Management Database (DMD). Rate plan and feature changes MDN changes Apply and restore from Hotline and Suspend status Restore de-Activations that were made in error, per Verizon Wireless’ requirements SIM changes on existing non HD Voice Smartphones Upgrades from CDMA only devices to HD Voice Smartphones and 4G LTE data only devices will continue to be allowed.