How do I turn off VoLTE via adb?

Issue

The way to turn off VoLTE through the UI is Settings > Cellular Networks > and toggle "Enhanced 4G LTE Mode".

How do I do this same action through adb?

Solution

First run:

adb shell settings put global volte_vt_enabled 0

You will see the settings UI toggle off the "Enhanced 4G LTE Mode" setting, but this won't actually turn off the setting.

You then need to run:

adb shell am broadcast -a android.telephony.action.CARRIER_CONFIG_CHANGED

If you want this to persist between reboots, you can run:

adb shell setprop persist.mtk.volte.enable 0

Answered By - theicfire