How to prevent incoming mobile call when I'm talking over Zoiper?

Question

When I talk over SIP by Zoiper for iOS (iphone 5s, iOS 9.0.2) incoming mobile call breaking my dialogue and backgrounding Zoiper. How can I fix it?

Thanks,

Gleb Smirnov

Answer 1

This is expected behavior in current releases of Zoiper.

When there is an incoming GSM call while you are in a VoIP one, the VoIP call is placed on hold and Zoiper goes to background.

Comments

Ok, but can I change this rule and don't backgrounding Zoiper?

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No, this behavior can not be altered. The incoming gsm call is with priority. This is a limitation in the operating system.

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And this behavior will be always? Or developer fix it in the future? 

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It can not be changed in Zoiper side, as this is a limitation by Apple's iOS.

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Ok, clear.

Thanks a lot