VoLTE provider support

General
353

I’ve basically followed what @abranson described in this thread for the 10 ii model.

As far as I remember the steps, they were:

  1. devel-su to gain root privileges,
  2. cd /vendor/oem/modem-config/ to change directory,
  3. mkdir S8683.1 to create the missing directory for Free service,
  4. cd S8683.1 to change directory,
  5. echo "mcfg_sw/generic/common/default/vl/global/mcfg_sw.mbn" > modem.conf to indicate to the IMS to use the generic configuration, which seems to somehow work with Free mobile (I’ve the 2 € plan and I’ve checked in my account that 4G calling option is activated).
  6. reboot the device and then check the VoLTE calling option in the phone settings.
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