# Ios 18 issues

**URL:** <https://qa.fmod.com/t/ios-18-issues/23204>\
**Category:** Unity\
**Created:** [July 29, 2025, 8:34am UTC](https://qa.fmod.com/t/ios-18-issues/23204 "2025-07-29T08:34:18Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![marko.ravnjak](https://avatars.discourse-cdn.com/v4/letter/m/c67d28/32.png) [@marko.ravnjak](https://qa.fmod.com/u/marko.ravnjak)\
**Post date:** [July 29, 2025, 8:34am UTC](https://qa.fmod.com/t/ios-18-issues/23204/1 "2025-07-29T08:34:18Z")

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Hi, we are getting some reports of audio issues on ios18. Audio gets cut and stays silent for some time, then maybe comes back after a while. Note that this happens during regular app play, not startup/resume. ATM we didn’t manage to repro it in house. Any more info on this?

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**Author:** ![marko.ravnjak](https://avatars.discourse-cdn.com/v4/letter/m/c67d28/32.png) [@marko.ravnjak](https://qa.fmod.com/u/marko.ravnjak)\
**Post date:** [July 29, 2025, 1:50pm UTC](https://qa.fmod.com/t/ios-18-issues/23204/2 "2025-07-29T13:50:51Z")

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iOS 18 Game Mode related?

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**Author:** ![li\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/li_fmod/32/6577_2.png) [@li\_fmod](https://qa.fmod.com/u/li_fmod)\
**Post date:** [July 30, 2025, 6:04am UTC](https://qa.fmod.com/t/ios-18-issues/23204/3 "2025-07-30T06:04:50Z")

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Hi Marko,

Thank you for sharing the information.

Unfortunately, I was unable to reproduce the issue on IOS 18 on my end either. Could I please grab a bit more info?

- What exact version of FMOD are you using?
- Do those reports mention any specific steps that lead to the issue? (e.g. using Bluetooth audio, in-game ads, etc.)

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<div class="post-metadata">

**Author:** ![marko.ravnjak](https://avatars.discourse-cdn.com/v4/letter/m/c67d28/32.png) [@marko.ravnjak](https://qa.fmod.com/u/marko.ravnjak)\
**Post date:** [July 30, 2025, 8:51am UTC](https://qa.fmod.com/t/ios-18-issues/23204/4 "2025-07-30T08:51:43Z")

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- we are using 2.02.13
- no specific steps really… (i’ve uploaded a video to profile)

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<div class="post-metadata">

**Author:** ![li\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/li_fmod/32/6577_2.png) [@li\_fmod](https://qa.fmod.com/u/li_fmod)\
**Post date:** [July 31, 2025, 5:57am UTC](https://qa.fmod.com/t/ios-18-issues/23204/5 "2025-07-31T05:57:13Z")

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Thank you for sharing the video.

I downloaded the game and was able to reproduce a similar issue. After watching an ad with audio playing, the in-game sound stops once the ad finishes. I had to swipe out of the app and return to it to get the sound working again.

I’m not 100% certain if the video you shared is directly related to this issue, but it does seem similar to one discussed here:

> [@Event callbacks don't work if other audio is playing on iOS](https://qa.fmod.com/t/event-callbacks-dont-work-if-other-audio-is-playing-on-ios/22465/4):
>
> Thanks for the video demonstrating the issue, and for testing the repro for it so thoroughly yourself! I’ve done a bit of a deep dive into it, and the issue is due to other applications using a larger buffer size for audio than FMOD. FMOD uses what is half the usual buffer on iOS to provide audio with lower latency (512 samples in FMOD for Unity settings → Platform Specific → DSP Buffer Settings → DSP Buffer Length). When FMOD audio is suspended in favor of other applications, the buffer than i…

I’d recommend giving it a read to see if any of the suggestions apply to your case.