WhatsApp is a Smartphone messenger available for Android, Nokia, Blackberry, Windows and iPhone devices. It uses Wi-Fi or 3G internet services to send messages with friends and family. In addition to you can send images, videos, notes and audio to other users. Multimedia sms are sent by uploading the picture, video, or audio to be delivered to an HTTP server and then delivering a link to the data along with its Base64 encoded thumbnail.
WhatsApp works on the customized version of the the available common Extensible Messaging and Presence Protocol (XMPP). Upon setting up, it creates user accounts using user’s telephone number as the login name. WhatsApp suite automatically compares all the user’s number from the device’s address book with its database of WhatApp users to automatically add contacts to the user’s WhatApp contact list. Previously the Android OS and S40 versions used MD5-hashed, reversed-version from the phone's IMEI because private data, as the iOS version used the phone's Wi-Fi MAC address.
Features of WhatsApp
Minimum requirements to install WhatsApp
For Android phones
For Nokia Phones
Currently running WhatsApp versions
Additional Info: History stored on WhatsApp is not fully secure. So, if your Smartphone gets into wrong hands, then it will cause lots of problems to you. It's better to remove WhatsApp history, so if you want to know how to clear WhatsApp history? Then, click on the given link and learn a simple way to clear WhatsApp history.