WhatsApp's origins trace back to 2009, when two former Yahoo employees, Jan Koum and Brian Acton, launched what was initially a modest application designed to share status updates with friends, messages like "at work" or "low battery."
The original app, featuring a phone icon on a green background, wasn't conceived as a chat platform. The transformation came following an upgrade to Apple's notification system. The founders noticed users had begun repurposing the status fields to communicate with each other, and quickly recognized the opportunity. They upgraded the system into a phone number-based instant messaging application, which rapidly became a free and popular alternative to the expensive SMS and MMS text messages of that era.










