Android : How to add my app icon in contact list of users' android phone

I just finished the development of my app. Its a chat app. Now i want to add my app icon in contact list of phone like Facebook, Google and Whatsapp icon is there. I want exactly like this:

Means if anybody from my contacts is using my app, icon of my app should be visible with the name in my contacts list. If anybody has any idea, please help me to do this. thanks in advance :)