The oldest device capable of running Whats App is the Symbian-based Nokia N95 released in March 2007.
In August 2014, Whats App released an update to its Android app, adding support for Android Wear smartwatches.
Until 2017 Whats App positioned itself as a solution for a single party with a single smartphone to communicate with another such party, enabling small businesses to use the platform to communicate with customers, After months at beta stage, the application eventually launched in November 2009 exclusively on the App Store for the i Phone.
Fishman found a Russian developer on Rent ACoder.com, Igor Solomennikov, and introduced him to Koum.
Koum named the app "Whats App" to sound like "what's up".
On February 26, 2016, Whats App announced they would cease support for Black Berry (including Black Berry 10), Series 40 and Symbian S60, as well as older versions of Android (2.2), Windows Phone (7.0) and i OS (6), by the end of 2016.
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".
In August 2011 a beta for Nokia's non-smartphone OS Series 40 was added.
A month later support for Windows Phone was added, followed by Black Berry 10 in March 2013.
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.
Providing a bundle of these free of charge to users will work like a gateway drug of sorts – users who may be able to afford data services and phones these days just don’t see the point of why they would pay for those data services.