SIP Dialer for Android, iPhone

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
I am looking for a developer who can provide us VoIP Dialer for Android, iPhone (based on the latest version of CSipSimple)
The Dialer should not have any developer logo or any other link. This should be belong to our VoIP service.
The IP address should be fixed (managed/changeable by Admin) User just need to input his user ID & PW to use it.

On Main Screen user should able to see:
~ Account Balance
~ Last Dialled Numbers
~ Access to Phone Contacts.

This should support all version of Android, iPhone.

Additional: We need source codes (without encrypted) so we can change IP address (by our own) in future if we need.
Admin should be able to edit/add/delete IP address to keep dialer active according to requirement.
Functionality: If user wish to call any number stored in his phone book, he should able to make call from our VoIP gateway... and money will be charged to his VoIP account... this should work on 3G/4G & Wifi network.

Skills required:
Android, iPad, iPhone, Mobile Phone, VoIP
About the employer:
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