I have an iPhone 14 Pro Max but the problem was present on prior phones. Wi-Fi calling is sporadic at best. I sit two feet away from my router so the signal is strong. Quite often my calls on wi-fi calling are garbled and break up. I discovered that if I turn on UPNP on my router that wi-fi calling works beautifully. This is a security risk so I don’t want to leave it on. I got the port numbers that need forwarding for wi-fi calling to work properly but forwarding the ports doesn’t seem to work as expected. Right now I am still using UPNP. Does anyone have any suggestions for getting port forwarding to work?
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