Now Use the New FREE Android Messenger App as it has some additional advantages over Whatsapp.
+Send Unlimited FREE SMS's
+Many New Smilies, Facebook Troll Smilies Added
+Make FREE Calls
+All Whatsapp features included
Download 4 FREE from http://gs.im/DMG
Steps to install : (Its All FREE)
1) Open http://gs.im/DMG from your mobile.
2) Use the Android Browser Google Play.
3) Click Download.
4) Register using your mobile number.