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Early versions of WhatsApp initially crashed and failed, however WhatsApp 2.0 was released with a messaging component that allowed for two way communication which significantly increased downloads of the application.
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Co founder, of Whatsap Brian Acton (whom used to work with Koum at Yahoo) persuades five ex-yahoo friends to invest in approx $250,000 in seed funding. Acton is then granted co-founder of WhatsApp
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A new version of WhatsApp was created in order to enable the sending of images in a conversation.
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After working at Yahoo and being rejected from a job at Facebook, Inc, Ukrainian/American entrepreneur and computer programmer -Jan Koum (Now, co-founder) incorporates 'WhatsApp Inc' in California.
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With the help of Chris Peiffer, Koum developed the Blackberry version of WhatsApp which proved well received by many of those with Blackberry smartphones.
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A version of WhatsApp is created to support all users on Android Devices.
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WhatsApp announces that all conversations and messages within those conversations are encrypted in the 'latest version' of WhatsApp for iOS and Android (excluding Windows and Blackberry)
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WhatsApp announces a new interactive voice messaging procedure users can utilise instead of typed messages.
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WhatsApp introduces a new feature named 'Read receipts' that alerts users when their messages have been read by recipients. Also includes a features that allows for users to disable the feature.
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Facebook announces its acquisition of WhatsApp for US$19 billion. Its largest acquisition to date.
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A web version of the application is introduced that can be synced with your mobile number to access WhatsApp services online on a computer or laptop.
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WhatsApp introduces a breakthrough in a new form of privacy software known as 'end to end encryption' that users can now verify each other's keys. The users conversations are limited to only be seen by the intended recipients through a series of locks and keys that are automatically created when each message is sent. This prevents messages being observed by any third party.
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WhatsApp introduces a document sharing feature that allows for the sharing of PDF files between communicators
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WhatsApp launches WhatsApp Business for small business use.
