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It is a bit strange I am unable to find a simple answer from the vodafone simonly new purchases website.
Is 4G calling available to all phone models that support the 4g/VoLTE feature?.
I am thinking of purchasing a 'basic simonly' plan - however, this is not stated under "what is not included".
So the all important question is, can I assume 4G calling is included in basic sim only plan?
Here is the link to the price plan and t&Cs
4G calling can be though to have two parts to it:
Consumer SIMO plans should all support it and have the option in the account menu.
However, device support for VoLTE is a whole other can of fish. Modern iPhones are supported well but in Android land it's mostly flagships with Vodafone ROM.
I would have thought a "basics" sim only plan does not include 4G Calling - as according to Vodafone's own 4G Calling page it's only available on certain plans (for e.g. "Red Extra" or "Red Entertainment").
4G Calling and WiFi Calling have to be enabled in My Vodafone before you can use either service on a compatible plan, but the option to enable it within My Vodafone won't exist unless you are already on a compatible plan.
Here's the list of plans the say 4G Calling is compatible with:
Also, you’ll need to be using one of these plans:
Business Freedom if non-VPN version is selected
Vodafone Public Sector Inclusive
Vodafone Public Sector Standby