Hello guys I am using whatsapp applications it was very good app.the concept of this application is you can send text msg, audio and video msg from other user.the designing of the app very good it was very good and user handling.the layout very well design and it was also good work in 2G network.the functions are very well set on this application.you can create also group.you can send thousands of emoji.this app was small size and available in google ios and microsoft play store.you can install easy with mobile number.it was useful application for conversations .