So
whatsapp huh . Basically whatsapp is an android/ios app through which user can send and receive messages and calls from their friends, relatives family through internet . It has been written in erlang . It is owned by facebook . It offers a variety of functions . Including status update, sending multimedia, ppt, pdf’s and variety of files through a message . The user can also update his whatsapp display picture whenever he likes . It is helpful in many ways .