The project a phone book application with categories. It will contains 3 main pages on 

- Categories - List of Contacts - Favorites

Categories and List of Contacts screen will be have a searchbox which have a auto complete feature

and 2 detail pages needs

- Contact details - Add Category

also a action can be use from context menu

- Import Contact from Phonebook - Edit active Contact

The categories data structure will be a tree which can goes to theoreticaly infinite. So the categories page will be created dynamicly which takes data from database. The tree's each branch will/can be show with in icons or list form. At the last child of the tree will contains the connected Contacts.

On list page and Categories page when a Contact is clicked by user, a call will be started.

All data will saved in programs database. It can be sqlite or a better option can talk.

All the program sources will be taken. 

The application UI desing MUST be professional.

I am also a programmer but i dont have exprience on mobile software development. I think that will be helpfull.

 

Please relax to ask question.