Dialer for Android / IOS

1) Mobile Dialer for phone sets from Nokia with Android 2.1 and greater phones and tablets, i OS ( iphone , ipad) , For Android we would prefer branding of latest version opensource csipsimple , locked to our service and minor addition like balance display For IOS , you can use latest pjsip , siphon We will need source code for further development . Person who have already worked on project will be preferred