0 votes

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

in iOS by (150 points)

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

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

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