I´m using Zoiper IAX Light
When I make a call the mobile microphone not working. If connect a earphone with mike, done well. The same occurs if activate the the speakerphone.
Strange behavior: after using earphone the mike phone started to done well.
I think this is in fact a Bug, because a I can repeat with different mobile phones, and always is necessary follow this procedure
Zoiper IAX SIP VOIP Softphone