WiFi calling problems

[wingmaster]

Hi,

Phone signal where i am based is aweful, so WiFi calling is a must, howerver we are having big problems with it not working properly.  I can hear people perfectly but  they can't hear me properly, reporting i sound robotic.

My wifi internet speed is about 20mbps download and 2-3 upload.  Importantly i can whatsapp voice call, skype / zoom video call, stream netflix etc perfectly so i dont think it's an internet speed problem.

I have spoken with the tech support who say everything is set up fine and it should be working, but suggested sending me out a new sim card - not sure how that would help.

I have an iphone 11 pro

Anybody have any suggestions ?

[MI5]

@wingmaster 

Try it on a different wifi connection to detrmine if it's an issue with the wifi or phone first.

[wingmaster]

Tried on different WiFi, still aweful quality 

[MI5 · Accepted solution]

Have to assume it's phone issue then as it's not a general O2 WiFi issue. 

I use it regularly at home with no problems. 

Try asking Apple for help in troubleshooting.

https://www.apple.com/uk/retail/geniusbar/