WhatsApp is a free messaging app for Android devices that allows you to send text and video messages, and make voice and video calls over Wi-Fi or your data connection. It is available in over 110 countries and can be used by anyone with a phone number, regardless of their location or mobile device.

The app has a user-friendly interface that makes it easy to use and understand. You can also add contacts from your phonebook, call log, and Favorites list.

You can send and receive messages and calls on WhatsApp from your friends and family, and you can also chat with other people in your own language. The app is available in several languages, including English, Spanish, Portuguese, Italian, Hindi, Japanese, and Korean.

You can add and remove contacts and edit your contact list.

You can also send and receive messages and make calls on WhatsApp from other people.