My headset doesn't work on IOS as well as not on Android smartphone.
Other apps like dictaphone, Siri and Spotify work fine, both talking and listning.
Connection via usb-A cable:
- Ipad original Apple lighting to USB Camera connection set
- Smartphone ubs-C to USB-A
Webex app: Webex Meet version 41.11.3 (41130.3)
- IOS 15.1, Ipad 8th generation
- Smartphone Samsung Galaxy A50, android 11
Although I've tried Android, I prefere to get the headset working with webex on Ipad/IOS