said in Does Fairphone 4 supports VoLTE ?:
@gpatel-fr
I just made a call, I got the standard ringing until the other side picked up the phone
Though again, I'm not sure if the lack of a "3g" icon is proof enough that volte is actually working Cellular Settings -> Carrier & APN -> 4G calling (VoLTE) is available and enabled
After a bit more testing it looks like that was a false positive Yes, all the settings are there, but following this thread and calling gbus it seems that volte is not actually supported:
$ cat /etc/ofono/binder.d/qti.conf
[Settings]
ExpectSlots = slot1
extPlugin = qti
radioInterface = 1.4
[slot1]
path = /ril_0
slot = 0
$ gdbus call --system --dest org.ofono --object-path /ril_0 --method org.ofono.IpMultimediaSystem.GetProperties
({'Registered': <false>, 'Registration': <'auto'>, 'VoiceCapable': <false>, 'SmsCapable': <false>},)