Robotic voice on calls
Hello,
I have a 13 Pro Max. In my house I do not have cell reception so I rely on wi-if calling. I can make hour long calls no problem however whenever I am out of the house and my wife calls me from home on wifi calling with her iPhone 12 she will sound like a robot and I can barely hear her. It’ll revert back to normal for a few seconds but then happen again. She said I am the only one this happens to. She had an iPhone 11 before with the same issue. I see that other people have experienced similar issues. Any suggested remedies? Thanks
iPhone 13 Pro Max