Audio missing after Update

Question

After updating to iOS 11.2.1 I have problems with the audio playback. When I restart the iPhone, audio playback works. But the next time I make a call, I can't hear the caller. I get the message "Audio missing?". 

I've been using Zoiper for a long time and haven't changed the settings.

Can anyone help?  Thank you very much!

Michael

Comments

Just a guess on this one check the network settings for the account, you can try Use RPORT for Media?

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You can also try our troubleshooting guide regarding such issues here. This sounds like a NAT related issue.