Android simple app

We need some help with the one of our Android apps in the area of content sharing. The project is divided into 3 phase, Phase one is defined and now we are defining the requirments for phase 2&3 (which might require also some java backend development). Phase one is very simple and it consists on 4 simple activities: Please notice that we will provide for this phase the BE services and graphics. This is the first project out of 4 that we are working on. 1 - Splash. 2 - Login screen: THe login screen has 3 options (buttons): - Sign up ---> will take the user to a sign up page. - Facebook connect - will connect to your fb profile and will take tohe user to the login page - Login - will take you to the login page directly. 3 - Login page: - User name and passwod - with a call to a server to verify the password. 4 - Sign up page: Cosists of user name, password - and if you arrive to this page from FB connect - it migh have also you birthday and profile picture. THe activity needs to verify with the server that the user name is unique and register the user. (BE service). 5 - Upload contacts to the server. Once a user is created (after sign up) and activity asking the user for permission to upload his contacts information to the server is displayed. If the user agrees: Upload contacts (name + phone #) to server. Get from the server a list of contacts that were processed and store them in a local DB (name + phone #).