One of the most popular applications meant for messaging and found in the modern smartphones is the application named Whatsapp. The advantages and benefits are countless. The user will be able to send messages and MMS messages and will not have to bear the charges associated to it. There are a number of platforms that make the application available.
There is the iOS version of the application that works on the iPhones. This version is available in the AppStore. There are a lot of other platforms that support the application like Nokia Ovi, BlackBerry and Android. There are some interesting features in this app like group chat that allows you to have conversation with more than one person. There was a recent announcement that stated that in a single say, as many as one billion messages were sent using this application. A Wi-Fi or 3G connection is required in order to use this application.