so my office and room are in a basement so I spend 70% of the day "underground". If I have wifi calling disabled, I don't get calls about 40-60% of the time. texts always work because it uses wifi using RCS (I mostly use Signal so it's all good there). so it's just calls. If I had a stable mobile connection (even 1 or 2 bars, but 100% stable) then I would turn it off.Tell me why I would not want to disable Wi-Fi calling. I have been using it by default but I'm not sure if I'm benefiting it from it at all. So if it's draining my battery I would love to disable it. At the moment my battery is not stellar, but it could be much better since it's such a large battery.
Just depends on your situation. Materials, cell towers, carrier, the moon etc all play a role in how stable your mobile connection is. many think 1 or 2 bars is bad but it isn't 2011 anymore. you can have a stable connection at lower bars, but also unstable too. most just don't know what to look for. (Excellent app is Network Cell Info Lite on playstore)