VoIP app like Viber, WeChat, Skype for iPhone, Android, Windows Phone, etc with required features!!!

I would like to develop an app like Viber, WhatsApp or similar for iPhone, Android, Windows Phone, and possibly PC and Mac. The app functions must include text, picture and video messaging across all platforms, with voice calling. The application's user interface shall include tab bar on the bottom giving access to messages, recent calls, contact, the keypad and a button for accessing more options. Upon installation, it should create a user account using one's phone number as username. Address book to synchronize with phone's address book so users do not need to add contacts in a separate book. All users must be registered with their phone number, the software returns all App users among one's contacts. Additional features include file sharing capability (photos, videos, audio, etc), location sharing, group chatting, user profile, possibility of syncing with facebook account, and potential for further upgrade. If possible Two versions of the app are required one with limited access to certain features and one version with full feature access. Possibility of Multi-language platform for the above mentioned description. I need WeChat, Viber, MessageMe like [login to view URL] it should have free video call and all the features of viber , line , WeChat and it should also have feature to attach pdf documents, ppt,or any file from Microsoft office like ms word , ms excel etc. I want this project within a week. I will accept this project only when you will provide me the source code of the whole app designed and how you created it . I want this info because to have a proof that you Only have created this It is a test for you as the one who will provide me the best app with all the features required , he/she will be provided with projects from which you will earn more than 7000 dollars a month . So to grab this wonderful opportunity 1. I want a quality app. With all the features required in the app so as to check your ability!! 2. If you add a totally new feature in the app it will led to a increase the income from starting salary 7000 dollars to 8500 dollars or more depending on the feature u added. 3. You will be employed for a basic 6 months. And after 6 month it will be decided on your merit base or the projects submitted by u in this time period . 4. I have provided you a small budget to build this app this is to test that whether you are able to make a quality app in this small budget. 5. The projects will be given online so that there is no problem With location. I.e where you live 6. The job will only be provided to you if you succeed in the task of building a app like viber with all the required features. necessary requirements 1. Source code of whole app designed . 2. And you created it So as to have a confirmation that you have only created it. All the best guys !!!