Excel Phonebook

The application allows the user to add contacts from an Excel file. The user can add contacts from multiple Excel files at the same time. Also the user can delete contacts from one specific file keeping contacts added from other files intact.

The permissions required are:
1. Contacts Read/Write to add and delete contacts loaded from Excel file.
2. Storage to access the Excel files.

Note: Only Excel files having .xls extension are supported as of now.