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All major desktop browsers are supported except for Microsoft Internet Explorer.Whats App Web's user interface is based on the default Android one.
The oldest device capable of running Whats App is the Symbian-based Nokia N95 released in March 2007.
As of January 21, 2015, the desktop version was only available to Android, Black Berry and Windows Phone users.
Later on, it also added support for i OS, Nokia Series 40, and Nokia S60 (Symbian).
On February 24, 2009, he incorporated Whats App Inc. However, because early versions of Whats App often crashed or got stuck at a particular point, Koum felt like giving up and looking for a new job, upon which Acton encouraged him to wait for a "few more months".
In June 2009, Apple launched push notifications, allowing users to be pinged when they were not using an app.