Mobile SIP Cliente

Job ID: 32546263

Budget: $30 – $250 USD

I am looking for an open source mobile SIP client.

Must work & should be very stable for the following operating systems

iOS
Android
Windows

please only BID if you have done SIP & dialler projects before!

We need source code and customized UI as well.
Related categories: Asterisk PBX VoIP SIP