# Voice chat crash iOS with Android

**URL:** <https://forums.unrealengine.com/t/voice-chat-crash-ios-with-android/481562>\
**Category:** Audio\
**Tags:** cross-platform, unreal-engine, voice, iOS, question\
**Created:** [April 9, 2021, 7:54pm UTC](https://forums.unrealengine.com/t/voice-chat-crash-ios-with-android/481562 "2021-04-09T19:54:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![zerobarat1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@zerobarat1](https://forums.unrealengine.com/u/zerobarat1)\
**Post date:** [April 9, 2021, 7:54pm UTC](https://forums.unrealengine.com/t/voice-chat-crash-ios-with-android/481562/1 "2021-04-09T19:54:11Z")

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Hello, I have an issue for a while now I’ve been trying to crash but with not a lot of success and that is iOS is crashing whenever Android is using voice chat. Albeit, we are using Vivox for our implementation, but I am wondering if someone else got this issue before and was able to fix it.

```
Thread 36 name: VxVivox Audio
Thread 36 Crashed:
0 APPLICATION 0x000000010037ed14 vx_allocb + 322836 (str_utils.c:73)
1 APPLICATION 0x000000010037ed0c vx_allocb + 322828 (str_utils.c:73)
2 APPLICATION 0x0000000100415150 VivoxClient::vani_encode_and_send(VivoxClient::vani_encoder*, void*, VivoxSystem::AutoPtr<VivoxCore::MediaPayload>&, unsigned int, bool) + 938320 (encode.cpp:91)
3 APPLICATION 0x000000010042e16c VivoxClient::VoiceProcessor::SendPayloadToNetwork(VivoxSystem::AutoPtr<VivoxCore::MediaPayload>&, VivoxClient::VoiceProcessor::VADOutput const&) + 1040748 (voiceprocessor.cpp:2041)
4 APPLICATION 0x000000010042d2f8 VivoxClient::VoiceProcessor::ProcessInputQueue(VivoxSystem::AutoPtr<VivoxCore::MediaPayload>&) + 1037048 (voiceprocessor.cpp:1504)
5 APPLICATION 0x000000010042c22c VivoxClient::VoiceProcessor::ProcessCapture() + 1032748 (voiceprocessor.cpp:0)
6 APPLICATION 0x000000010042a7ac VivoxClient::VoiceProcessor::OnRealTimeTimerExpired(VivoxSystem::EventArgs<VivoxSystem::SmartPtr<VivoxSystem::Apartment>, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs> > const&) + 1025964 (voiceprocessor.cpp:1298)
7 APPLICATION 0x0000000100433458 VivoxSystem::EventListenerAdapter<VivoxSystem::SmartPtr<VivoxSystem::Apartment>, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs>, VivoxSystem::MemberFunction1T<void, VivoxClient::VoiceProcessor, VivoxSystem::EventArgs<VivoxSystem::SmartPtr<VivoxSystem::Apartment>, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs> > const&> >::OnEvent(VivoxSystem::SmartPtr<VivoxSystem::Apartment> const&, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs> const&) const + 1061976 (event.h:103)
8 APPLICATION 0x00000001004d49e0 VivoxSystem::Event<VivoxSystem::SmartPtr<VivoxSystem::Apartment>, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs> >::RaiseEvent(std::__1::shared_ptr<VivoxSystem::EventBase>, VivoxSystem::SmartPtr<VivoxSystem::Apartment> const&, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs> const&) + 1722848 (event.h:209)
9 APPLICATION 0x00000001004d20cc VivoxSystem::Event<VivoxSystem::SmartPtr<VivoxSystem::Apartment>, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs> >::RaiseRealTimeEvent(VivoxSystem::SmartPtr<VivoxSystem::Apartment> const&, VivoxSystem::SmartPtr<VivoxSystem::EmptyEventArgs> const&) + 1712332 (event.h:233)
10 APPLICATION 0x00000001004d0ba4 VivoxSystem::Apartment::RunRealtime() + 1706916 (apartment.cpp:383)
11 APPLICATION 0x00000001004d10ac VivoxSystem::Apartment::Run() + 1708204 (apartment.cpp:109)
12 APPLICATION 0x00000001004cbbd0 VivoxSystem::MessageRouter::ThreadStart(VivoxSystem::Object*) + 1686480 (messagerouter.cpp:0)
13 APPLICATION 0x00000001004d8544 VivoxSystem::OnThreadStart+ 1738052 (void*) + 44
14 APPLICATION 0x00000001004c7d6c VivoxSystem::OnThreadStart(void*) + 1670508 (osx.cpp:147)
15 libsystem_pthread.dylib 0x00000001d15bfcb0 _pthread_start + 320
16 libsystem_pthread.dylib 0x00000001d15c8778 thread_start + 8
```

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**Author:** ![thomasBakerVR](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@thomasBakerVR](https://forums.unrealengine.com/u/thomasBakerVR)\
**Post date:** [May 27, 2021, 9:53am UTC](https://forums.unrealengine.com/t/voice-chat-crash-ios-with-android/481562/2 "2021-05-27T09:53:34Z")

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What version of the engine and Vivox core are you using?