I hear echo during voice calls on iPhone 11 pro

Hello mrboos,

Welcome to the Apple Support Communities. It appears there is an echoing when on any type of voice calls. I'll help in any way I can.

It's not exactly related to your concern, but try the steps from this link which can troubleshoot call quality: If you can't hear a person on a call or voicemail or if the sound isn't clear on your iPhone

If you're still having issues, reach out to Apple Support: Contact Apple Support

Have a great day.

Very annoying. I’m going to turn down the speaker column so as not to let the sensitive mic pick up conversation so easily.