Intermittent Audio Issues

Our users are heavily using the iOS Zoom SDK inside our app and we are getting reports of users not hearing (mostly not hearing, rarely not seeing) our staff on the Zoom calls. It is happening in ~1 out of 200 calls. The call starts but either one side or both sides can’t hear each other. Checked the permissions, internet connection, restarting the device. The issue is very sporadic.

Which iOS Video SDK version?
It has been consistently happening with all the SDK versions. We have been upgrading our SDK frequently and the issue has been there.

To Reproduce(If applicable)
We have tried to reproduce it consistently no luck so far. It does happen on test environment but as I said, the ratio is 1 out of 200 calls. It is really hard to reproduce.

Smartphone (please complete the following information):
Across all devices and operating systems, but only on iOS. This does not happen on Android.

Additional context
Let’s not close this one since it is not reproducible. The error has been very consistent over a year and now that our volume of calls is increasing, the error is more prominent.

I need help with identifying the issue. I am willing to log the SDK state somehow for each call so that I can understand why some sessions don’t have audio. Can you let me know what fields/properties to look for in the Zoom SDK? I will be logging various information and then back tracing the problematic calls. Any kind of guidance would be very helpful here.


Hey @guvenb,

Thanks for using the dev forum!

Are you using the Video SDK or the Meeting SDK?