Does anyone have a simple solution? I need to use WIFI callin in my home, where I have a good internet signal, but terrible mobile coverage. I set the roaming preference to "Wifi preferred", but the WIFI calling preference remains "Mobile preferred". The phone will try to use the weak mobile signal, resulting in a poor quality call.
In advance, please do not suggest 1) reverting to airplane mode, or 2) buying a range extender.
This seems to happen for a few months after every system update.
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