How to diagnose Wi-Fi calling problems on iPhone 13 Pro?

Your point is well taken!

I am not anyway technical. I wrote as a simple plugnplay user ......... how do I get a reliable connection from my home to everybody else's network, when the cellular signal at my home is poor.

Thanks for clarifying :-)

Hi Jeff,

I can confirm both outgoing and incoming call work in airplane mode with the WiFi enabled. My young test helper reported hearing my voice as choppy although I heard him clearly - I figure his cellular signal might be suspect. He also taught me that Facetime audio offers a more stable performance.

PROBLEM: For most of the past three years I have been experiencing poor and unreliable cellular reception on my iPhone 13 Pro in my home. I called Freedom Mobile on several occasions over the past 3 years for help with Wi-fi Calling.  Although enabled on my iPhone, wifi-Calling and flip flops with cellular. I cannot get only wi-fi Calling when I’m at home. I’ve since installed a TP-Link AX23 router then a RE705X mesh extender, all with no improvement. Incoming calls fail to rimg even while I am holding my iPhone.

This past week, my last call to Freeedom Mobile Tech resulted in the switching out of the SIM card for the newest version. No improvement! I have since finally solved.

SOLUTION: Knowledge :-)

I’ve solved my issue with TWO QUESTIONS to Perplexity. Both TP-Link or Freedom Mobile would have avoided these years of frustration by all parties if the following two factors was clearly communicated by the techs/support to to the caller: 

1:  Wi-fi calling uses only the internet, NOT cellular signal. 

2:  iOS automatically chooses cellular over wi-fi calling.

A manual workaround is included in attached screenshot.

Thanks Lawrence!

I turned off WiFi Assist and Settings/Cellular shows cellular although cellular is weak and WiFi signal is strong throughout the home. But wait! I did a hard reboot on iPhone and Settings/Cellular shows I am now on WiFi Calling ....... spoke too soon, it is back on Cellular. So, until Apple allows the choice to prioritize WiFi Calling over Cellular, while at home, I'll go with the Airplane mode :o)

Cellular carrier.

Yes, because, over wi-fi calling, the voice transmission happens entirely over the internet instead of cellphone towers.