I don?t know if my question will be answered here or not. I actually use my mobile as mobile VoIP and have had recently installed a mobile VoIP app called eSky Mobile Softphone that is SIP based on my android phone. I was earlier using a different mobile VoIP app but now my phone is not working properly. I can receive calls but my calls crash almost all the times. I am using Axvoice VoIP service. Please help me get my problem solved. It would be a great help.