iPhone 12 Pro - Voice breaking up on calls
New phone purchased Mar 2021.
Issue: When using my phone in our home, the person I am speaking with reports that my voice is breaking up and garbled to the point where they cannot hear me at all. I can hear them fine with no issue at my end. Doesn’t happen all the time but more often than not. This was never an issue with my iPhone SE which is still in use in our home. Happens using Wifi or data (strong signal).
Action so far...
Settings >> Cellular >> Wi-Fi Calling >> turned on
Settings >> Cellular >> Cellular Data Options >> Voice & Data >> LTE (4th Generation)
Performed Apple Software update to 14.6.
Hardware checked and good (Apple in-store support)
Reinstall of Apple software (Apple in-store support)
Apple Support today suggested a phone replacement at a cost of $99 + tax. Not interested in spending more $, especially not knowing if that will fix the issue.
Have had to call people back on Zoom to have decent conversations which seems crazy after upgrading to the iPhone 12 Pro.
iPhone 12 Pro, iOS 14