No more app downloads, figuring out complex menus or loading wallets!
The Whats App support staff announce that messages were encrypted in the "latest version" of the Whats App software for i OS and Android (but not Black Berry, Windows Phone, and Symbian), without specifying the cryptographic method.
In January 2010, support for Black Berry smartphones was added, and subsequently for Symbian OS in May 2010 and for Android OS in August 2010.
In August 2011 a beta for Nokia's non-smartphone OS Series 40 was added.
The oldest device capable of running Whats App is the Symbian-based Nokia N95 released in March 2007.All major desktop browsers are supported except for Microsoft Internet Explorer.Whats App Web's user interface is based on the default Android one.Whats App was officially made available for PCs through a web client, under the name Whats App Web, in late January 2015 through an announcement made by Koum on his Facebook page: "Our web client is simply an extension of your phone: the web browser mirrors conversations and messages from your mobile device—this means all of your messages still live on your phone".The Whats App user's handset must still be connected to the Internet for the browser application to function.In August 2014, Whats App released an update to its Android app, adding support for Android Wear smartwatches.