# Audio not working on some ios devices

**URL:** <https://devforum.zoom.us/t/audio-not-working-on-some-ios-devices/73788>\
**Category:** React Native\
**Created:** [August 7, 2022, 3:08am UTC](https://devforum.zoom.us/t/audio-not-working-on-some-ios-devices/73788 "2022-08-07T03:08:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![thanh.huynh](https://avatars.discourse-cdn.com/v4/letter/t/74df32/32.png) [@thanh.huynh](https://devforum.zoom.us/u/thanh.huynh)\
**Post date:** [August 7, 2022, 3:08am UTC](https://devforum.zoom.us/t/audio-not-working-on-some-ios-devices/73788/1 "2022-08-07T03:08:21Z")

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We tested the react native sdk on multiple ios devices. The audio function work fine on some devices but some didn’t work at all. We didn’t hear any sound (in and out)

They threw errors:  
AudioDeviceIOS::SetMuteOutputAudioUnit unmute output  
AURemoteIO.cpp:2044 AURemoteIO@0x1081bea40: IOThread exiting with error 0x10004006  
AURemoteIO.cpp:1668 AUIOClient\_StartIO failed (-66637)

React Native Video SDK version: 1.3.1

The code snippets that are causing the error:  
await zoom.audioHelper.startAudio();  
await zoom.audioHelper.unmuteAudio(mySelf.userId);

Smartphone:

- Device: iphone xs
- OS: iOS 15.4.1

Please check  
Thank you!

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**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [August 10, 2022, 2:23am UTC](https://devforum.zoom.us/t/audio-not-working-on-some-ios-devices/73788/2 "2022-08-10T02:23:19Z")

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Hi @thanh.huynh ,

Thank you for sharing this with us. Can you please confirm that all of the ios devices were iPhone XS and iOS 15.4.1?

Gianni

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<div class="post-metadata">

**Author:** ![thanh.huynh](https://avatars.discourse-cdn.com/v4/letter/t/74df32/32.png) [@thanh.huynh](https://devforum.zoom.us/u/thanh.huynh)\
**Post date:** [August 10, 2022, 9:18am UTC](https://devforum.zoom.us/t/audio-not-working-on-some-ios-devices/73788/3 "2022-08-10T09:18:24Z")

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Hi,

The one that didn’t work is iPhone XS  
We tested on different phones not just XS

Thank you!

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [September 6, 2022, 3:08am UTC](https://devforum.zoom.us/t/audio-not-working-on-some-ios-devices/73788/4 "2022-09-06T03:08:43Z")

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Closed on September 6, 2022, 3:08am UTC

This topic was automatically closed after 30 days. New replies are no longer allowed.

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<div class="post-metadata">

**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [September 29, 2022, 8:08pm UTC](https://devforum.zoom.us/t/audio-not-working-on-some-ios-devices/73788/5 "2022-09-29T20:08:14Z")

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Hi @thanh.huynh ,

Can you please confirm if this is still an issue on the latest version?

Are you able to share the response body for [the participant’s QoS](https://marketplace.zoom.us/docs/api-reference/video-sdk/methods/#operation/sessionUsersQOS)?

Thanks!