people can't hear me on my iPhone 11

Hi Tjsaf,

Welcome to the Apple Community, where some of us do our best to help each other :)

You may have noticed the "Rekated Article" link from Apple Support above your question.

The article may be helpful to you.

Or:

There is another discussion thread on similar topic:

https://discussions.apple.com/thread/252782674

You might want to try the helpful advice there.

Hope this helps