1. ADVANCED COMPUTER TO, Kanishka Sir's

2. Introduction to Whatsapp Whatsapp Inc. Was Founded In 2009 By Brian Acton And Jan Koum (Also The Current CEO) Whatsapp Messenger Is A Proprietary, Cross-platform Instant Messaging Application For Smartphones. In Addition To Text Messaging, Users Can Send Each Other Images, Video, And Audio Media Messages. The Client Software Is Available For  Android, Blackberry Os, Nokia, And Windows Phone, iPhone etc.

3. Sign Up Process In Sign Up Process, Whatsapp Is Signing Process Is A Bit Simpler Than Wechat. In Whatsapp You Just Need To Enter Your Phone Number Through Which The App Verifies Your Account. Whereas In Wechat The Signing Process Gets Complete Through The Verification Of Your Email Address.

4. WhatsApp profiles :  Photo And Name : Your Profile Photo And Name Are Visible To Anyone You Chat With On Whatsapp.  Status : The Status Feature In Whatsapp Is A Real Time Indication Of What You Are Doing So That You Can Keep Up To Date With Your Contacts.

5. Smartphone Which Allows You To See The Picture Of Person Calling You. Some Application Allows You To Retrieve A Whatsapp Profile Photo, you Can Then Use It To Set The Same Image To The Contact On Your Phone. WhatsApp Contacts: This Quite Simple Application Allows You To Get Back The Photos Of Profiles Of Your Whatsapp Contacts For Use Them As Photo Of Profile On Your Telephone E.g. WhatsApp Contact Photo Sync

6. SMILEYS OR EMOTICONS ARE A GREAT WAY TO EXPRESS YOURSELF. SOMETIME IT IS EASY TO CONVEY MESSAGE VIA A PICTURE (OR EMOTICON) THAN ACTUALLY SAYING OR WRITING THE TEXT. Emoticons

7. Technical Automatically compares all the phone numbers from the device's address book with its central database of WhatsApp users to automatically add contacts to the user's WhatsApp contact list. It creates a user account using one's phone number as username Whatsapp Uses A Customized Version Of The Open Standard Extensible Messaging And Presence Protocol (XMPP) (XMPP) a communications protocol for message-oriented middleware based on XML (Extensible Markup Language)

8. Security Beginning Whatsapp User Accounts Open For Hijacking. Whatsapp Messages Can Easily Be Read If Packet Traces Are Available In September 2011, Whatsapp Released A New Version Of The Messenger Application That Allowed Forged Messages To Be Sent And Messages From Any Whatsapp User To Be Read.

9. POPULAR THAN OTHER SIMILAR MESSENGER Viber Launched On Android In May 2011 As A Restricted Download And Worldwide Availability Came In July 2011. Nimbuzz also has a unique feature of calling our friends for free and cheap international calls. Another great feature is storing all our important contacts in the Nimbuzz Phone book. We can also share our images,videos,music across all social platforms. WeChat provides multimedia communication with text messaging, hold- to-talk voice messaging, broadcast (one-to-many) messaging, photo/video sharing, location sharing, and contact information exchange

10. Whatsapp upgrade adds voice messages Voice messages are popular as an alternative to typing on phones‘ Whatsapp is not putting any duration limit on voice messages sent. It Has Designed Its Software So That Recordings Automatically Play Through Headphones If They Are Plugged In, Or Otherwise Through The Phone's Earpiece When The Device Is Placed Next To A User's Head And Through The Speakerphone If Held Away.