Desi Fone is a simple sip client. By using this application users can make voip call easily. The main features of this applications are- • Making voip calls to supported gsm number and to other sip clients. • Receiving a call from another sip clients. • Sending SMS to gsm numbers of supported countries and to other sip clients. For using the main features the supporting features are- • Viewing Call logs and making call from call logs. • Viewing phone contacts to call a number from phone-book. This application is a VoIP application. So please check your network settings and make sure internet connection is available. If the network is not available then the application may exit after showing a message or just show Internet error. in both cases please stop the application check your network connection and start it again. To register this application you must set correct username and password from the setting menu. You can collect all of these from your service provider. To get your free trial operator code visit www.joviantel.com.