Extensions Manager

Extensions Manager is a small utility for storing your work's extensions without merge these extensions with your phone address book , also you have the ability to add types to classify the extensions , so you can add many extensions for the same person but different types.also you can call this extension, find extension by its number ,backup your extensions and restore them.
This app is suitable for people who have so many colleagues.
Finally this is my first android app and my message is to help Syrian children who affected in the war and this small and non-valuable app is just to say thank you for your help for Syrian children.