did you ever get any resolution to your problem? My phone has also been having this issue and I did my own research and found others have said that disabling the VoLTE would stop the dropped calls in my area.
Hi urchin_84 ! I understand how inconvenient this may be for you. Please try that as work around and let us know the outcome.
Awesome urchin_84! Thanks for taking the time to let me know. Take care and have a wonderful rest of your day. 🙂