# No audio playing on IOS Issue

**URL:** <https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761>\
**Category:** Unity\
**Created:** [June 13, 2024, 4:53pm UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761 "2024-06-13T16:53:44Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![G4LVIS](https://avatars.discourse-cdn.com/v4/letter/g/e9a140/32.png) [@G4LVIS](https://qa.fmod.com/u/G4LVIS)\
**Post date:** [June 13, 2024, 4:53pm UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/1 "2024-06-13T16:53:44Z")

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Hi, FMOD works well on all platforms, but on iOS, no audio is being played. I’ve already tried using this line of code that I saw in another topic: `FMODUnity.RuntimeManager.CoreSystem.mixerResume()` . Xcode doesn’t show any errors. Do you have any other ideas I should try?

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**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\
**Post date:** [June 17, 2024, 6:13am UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/2 "2024-06-17T06:13:15Z")

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Hi,

What version of the FMOD integration are you using?

> [@G4LVIS](#):
>
> Do you have any other ideas I should try?

A few things to confirm:  
Can you please set the following settings:  
 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/6/63c1b8c4abf89de2b180bdb57d7508a92094bc37.png)  
and share the logs when running the app on an IOS device.

Also, confirm that you have a `Mobile` bank set up in the FMOD Studio preferences:  
 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/3/35ad2939e170248dec3a303296391cfd07e1e42b.png)

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<div class="post-metadata">

**Author:** ![G4LVIS](https://avatars.discourse-cdn.com/v4/letter/g/e9a140/32.png) [@G4LVIS](https://qa.fmod.com/u/G4LVIS)\
**Post date:** [June 17, 2024, 1:36pm UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/3 "2024-06-17T13:36:27Z")

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hi thanks for reply!

update in this is that at the end for some reason the sound was being played on iphone’s notifications volume, so if this is toggle, no sound will be heard:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/6/60b8cc7e2e026c17364d7f0d1914d79a6b219c30.jpeg)

so, is there a way to switch the output to sound in the multimedia output instead of notification volume?

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<div class="post-metadata">

**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\
**Post date:** [June 19, 2024, 4:00am UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/4 "2024-06-19T04:00:29Z")

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Thanks for the information.

This is an issue with the `AVAudioSessionCategory` Unity uses by default.

A solution is creating a callback to change the `AVAudioSessionCategory` to [AVAudioSessionCategoryPlayback](https://developer.apple.com/documentation/avfaudio/avaudiosessioncategoryplayback).

Let me know if you need assistance implementing the callback.

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<div class="post-metadata">

**Author:** ![G4LVIS](https://avatars.discourse-cdn.com/v4/letter/g/e9a140/32.png) [@G4LVIS](https://qa.fmod.com/u/G4LVIS)\
**Post date:** [June 19, 2024, 9:25pm UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/5 "2024-06-19T21:25:32Z")

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Hi @Connor_FMOD thanks for reply again, yes it would be nice if you help me implementing the callback, I’m currently using unity

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<div class="post-metadata">

**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\
**Post date:** [June 20, 2024, 6:40am UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/6 "2024-06-20T06:40:21Z")

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No worries, you can piggyback on our callback in the `platform_ios.mm` file:  
 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/7/7177872e28e27ade967df8fb7e911e0674dd9e10.png)  
Add:

```auto
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];

```

to the line below `platform.ios.mm` 17:  
 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/9/9cf059fa4f713386b159c549023ffe8eb0196f92.png)

Hope this helps!

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<div class="post-metadata">

**Author:** ![G4LVIS](https://avatars.discourse-cdn.com/v4/letter/g/e9a140/32.png) [@G4LVIS](https://qa.fmod.com/u/G4LVIS)\
**Post date:** [June 24, 2024, 8:06pm UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/7 "2024-06-24T20:06:00Z")

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@Connor_FMOD i tried but the result is the same, anything other idea for what could it be the issue?

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<div class="post-metadata">

**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\
**Post date:** [June 26, 2024, 5:39am UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/8 "2024-06-26T05:39:23Z")

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Would it be possible to get a copy of your project or a stripped-down version displaying the issue [uploaded](https://fmod.com/profile#uploads) to your [profile](https://fmod.com/profile) to test on my side? Please note you must register a project with us before uploading files.

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<div class="post-metadata">

**Author:** ![G4LVIS](https://avatars.discourse-cdn.com/v4/letter/g/e9a140/32.png) [@G4LVIS](https://qa.fmod.com/u/G4LVIS)\
**Post date:** [July 2, 2024, 9:43pm UTC](https://qa.fmod.com/t/no-audio-playing-on-ios-issue/21761/9 "2024-07-02T21:43:07Z")

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Hi @Connor_FMOD unfortunely the publisher does not want to share the repository, if you want information or some logs I can provide it