I have been using whatsapp since last 5 years well whatsapp doesnot need an intro but those who dont know its an app basically a messaging app. Whatsapp has many features such as images, videos, audio, documents can be send and recieve but the sender/ reciever must have whatsapp account. even user can call from whatsapp to whatsapp for free voice call and video call both for free to use this app internet connection is required
this app is avaible on Playstore, Appstore, Windows store, bb store. once we download it we have to register it with out mobile number than a messags will come in out mobile for verification
after veriftying it is ready to use
it helps people to stay connected with eachother from overseas call for free