i would like a Dialer with my brand and the features:
-01- While Dialer Installation on smartphone, generate sip account with mobile IMEI.
-02- then send by API the account to sip server to be create there too
-03- After successful return from API, registered to sip server (embedded proxy)
-04- IM, can send message test, (default add our customer service id (support))
-05- can receive incoming call from sip server
-06- OS: android, IOS and window phone