WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.
In order to download the latest version of WhatsApp, you need to have a smartphone. It works on iPhone, BlackBerry, Android, Windows Phone, PC and Nokia and those phones can all message each other.
To use WhatsApp you need: a compatible smartphone or tablet with a sim card, an internet connection and a phone number.
Only with the WhatsApp Username and password can any one have access to add friends, free chat, share pictures and all other function for free.
Users of WhatsApp can share their location in real time over messages. They can also organise lists of contacts so that they can quickly send messages to lots of people in group chats through WhatsApp.
Probably the best feature of WhatsApp is that it allows users to keep in touch with people living abroad, without incurring the international charges associated with text messages,without ads.
The app itself is free to download and use for a year. After that, What's App charges 99 cents yearly.