Zoom Mobile Audio Issues for T-Mobile Users: No Sound

Has anyone else encountered audio issues with Zoom on T-Mobile? Several users (iOS & Android) can't hear or be heard during calls over their data connection. We've submitted a ticket with Zoom and confirmed basic troubleshooting, but Zoom claims it's a T-Mobile issue. The call quality dashboard for Zoom shows no receiving stats for T-Mobile users, so it does seem like maybe a port issue on T-Mobile's end. Looking to see if any others are experiencing this.