Trying on a 10iii, operator Nowo (Portugal). The operator says on their website that VoLTE is activated for all hardware that supports it.
in /vendor/firmware_mnt/image/modem_pr/mcfg/configs I don’t see anything that matches Nowo or MEO (according to Wikipedia, Nowo operates VoLTE through a commercial agreement with MEO).
getprop persist.vendor.somc.cust.modem0
S73.1
cd /vendor/oem/modem-config/
mkdir S73.1
cp S9999.9/modem.conf S73.1/
Does not register (after reboot); here are the logs when I try to activate VoLTE in the configuration:
journalctl -t ofonod -f
imsradio0 < 7 requestRegistrationChange
vendor.q ti.hardware.radi o.ims@1.0::IImsR adio....
imsradio0 > 4 requestRegistrationChangeResponse
vendor.q ti.hardware.radi o.ims@1.0::IImsR adioResponse.... ........
imsradio0 > 27 vopsChanged
vendor.q ti.hardware.radi o.ims@1.2::IImsR adioIndication.. ....
Edit: the table above says MEO works but does not register. @flypig, what modem.conf file should I use assuming MEO? I can’t see any relevant in the list, and S999.9 does not work (during a call, it switches from 4G to 2.5G).