Missing IMS / VoLTE toggle
Whilst more and more countries / operators / MVNOs are switching on IMS / VoLTE, many have not yet done so.
I believe the Quectel EG25G modem may come with IMS set to 1 by default and do not know if there are any side effects to it being enabled even if your operator does not support it.
I would think it logical to disable IMS if you do not need VoLTE and to enable it if your operator supports it. You may indeed find that there is no VoLTE profile for your operator and that the generic one does not work and need to turn IMS / VoLTE off explicitly.
I know there are AT commands you can send to the modem but presumably this would be useful on the GUI.
Being able to select one of the explicit IMS profiles would be an added bonus. Quectel modem has an autoselect default, I think. Probably create a new issue for this explicitly if you think it can be done at some stage?