WhatsApp has become a social communication tool for people all around the world. 

You can send and receive messages, video and voice calls, and more, in real-time. No matter where you are, there is always a way to stay connected.

If you want to send a message to someone, you can choose from a variety of categories like text, audio, images, and video. Once you're done, just hit send and you're done. It is that easy.

WhatsApp has a very simple and intuitive design. The main screen is where you will see all the messages, chats, and calls. The left side is for chatting with friends, and the right side is for contacting family and friends.

You can also create groups. A group is a collection of messages, video calls, and audio calls. The group can be private or public.

You can also add and remove contacts from your phonebook. A contact is a person or a group that you have contacted.