# Delay over Bluetooth with Fmod 2.02.09 on Hwawei mobile

**URL:** <https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927>\
**Category:** Unity\
**Tags:** unity, csharp\
**Created:** [November 30, 2023, 2:23am UTC](https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927 "2023-11-30T02:23:06Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![zhangheng](https://avatars.discourse-cdn.com/v4/letter/z/94ad74/32.png) [@zhangheng](https://qa.fmod.com/u/zhangheng)\
**Post date:** [November 30, 2023, 2:23am UTC](https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927/1 "2023-11-30T02:23:06Z")

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Huawei mobile phones with Bluetooth headsets have a delay of 0.5-0.6s

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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:** [November 30, 2023, 11:55pm UTC](https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927/2 "2023-11-30T23:55:15Z")

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Hi,

What FMOD Integration version are you using?

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**Author:** ![tristanlewis](https://avatars.discourse-cdn.com/v4/letter/t/c6cbf5/32.png) [@tristanlewis](https://qa.fmod.com/u/tristanlewis)\
**Post date:** [December 1, 2023, 11:12pm UTC](https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927/3 "2023-12-01T23:12:27Z")

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You may want to run the Oboe testing app to determine whether the issue is coming from the device or from FMOD - [https://github.com/google/oboe/tree/main/apps/OboeTester/docs](https://github.com/google/oboe/tree/main/apps/OboeTester/docs)

If the app reports similar latency or experiences crackling, the issue is with the device and the manufacturer will need to address it.

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<div class="post-metadata">

**Author:** ![zhangheng](https://avatars.discourse-cdn.com/v4/letter/z/94ad74/32.png) [@zhangheng](https://qa.fmod.com/u/zhangheng)\
**Post date:** [December 4, 2023, 9:04am UTC](https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927/4 "2023-12-04T09:04:09Z")

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Hello, My Fmod Studio’s version is 2.02.12。when I use Fmod API that version 2.02.12. My HuaWei mobile with Bluetooth has a delay of about 0.6s. After I upgrade my Fmod API to 2.02.19, There still has a delay of 0.5-0.6s

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<div class="post-metadata">

**Author:** ![zhangheng](https://avatars.discourse-cdn.com/v4/letter/z/94ad74/32.png) [@zhangheng](https://qa.fmod.com/u/zhangheng)\
**Post date:** [December 4, 2023, 9:05am UTC](https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927/5 "2023-12-04T09:05:22Z")

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My HuaWei mobile is Harmony OS 4.0

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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:** [December 6, 2023, 3:59am UTC](https://qa.fmod.com/t/delay-over-bluetooth-with-fmod-2-02-09-on-hwawei-mobile/20927/7 "2023-12-06T03:59:15Z")

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Hi,

Thank you for the information.

Using Bluetooth devices will have some unavoidable delays, further explained here: [FMOD Engine | Platform Details - Android](https://fmod.com/docs/2.02/api/platforms-android.html#:~:text=Pairing%20with%20a%20BlueTooth%20speaker%20or%20headset%20will%20incur%20significant%20extra%20latency%2C%20120ms%20in%20some%20tests.%20This%20is%20currently%20unavoidable%20due%20to%20the%20OS%20taking%20extra%20buffering%20beyond%20developer%20control).

Testing with Oboe I was also experiencing delays of 500ms, an option may be testing some of the other Anrdoid output options to see if the delays are more acceptable: [FMOD Engine | Core API Reference - System](https://fmod.com/docs/2.02/api/core-api-system.html#fmod_outputtype).

Hope this helps