This app must be developed for android and IOS, I need an app developed that has VoIP capability to make outgoing voice calls to local cell phones and landlines using wifi,and send text messages using 3G/4G data or wifi, users who have the app can make app to app voice calls and video calls.
25 los freelancers están ofertando un promedio de $3356 para este trabajo.
Hi.. I am ready for your project. I have rich experience of voip app.. Already I have some app for voip..That is , It's use sip protocol and asterisk pbx. I hope to discuss for details with you. Best Regards.