Ultimate WhatsApp Quiz! Trivia

Explanation
WhatsApp was initially released in 2009. This means that it was not released in 2004, 2005, or 2006.

Explanation
Brian Acton and Jan Koum are the founders of WhatsApp. They developed the messaging app in 2009, aiming to provide a simple and secure way for people to communicate. Brian Acton, an American computer programmer, and Jan Koum, a Ukrainian-American entrepreneur, created WhatsApp with a focus on privacy and user-friendly design. The app quickly gained popularity and became one of the most widely used messaging platforms globally. In 2014, Facebook acquired WhatsApp for $19 billion, further cementing its position as a leading communication tool.

Explanation
Erlang is the correct answer because WhatsApp is primarily written in Erlang, a programming language known for its concurrency and fault-tolerant capabilities. Erlang's lightweight processes and message-passing model make it suitable for building highly scalable and reliable systems like WhatsApp, which handles billions of messages every day. Additionally, Erlang's built-in support for hot code swapping allows WhatsApp to update its software without any downtime, ensuring a seamless user experience.

Explanation
WhatsApp Inc. is headquartered in California. This is where the company's main office and administrative operations are located. California is a major hub for technology companies, and many tech giants have their headquarters in this state. Being in California provides WhatsApp with access to a large pool of talent, networking opportunities, and a thriving tech ecosystem.

Explanation
WhatsApp has 1 billion users. This means that there are 1 billion people actively using WhatsApp for messaging and communication purposes. This large user base highlights the popularity and widespread usage of the platform. With such a vast number of users, WhatsApp has become one of the most widely used messaging apps globally.

Explanation
Facebook acquired WhatsApp.

Explanation
In 2014, the acquisition of WhatsApp took place.

Explanation
WhatsApp initially charged $1 per year.

Explanation
In 2015, WhatsApp introduced voice calls as a new feature to its messaging platform. This allowed users to make phone calls using the app, eliminating the need for traditional phone calls. This feature was a significant development for WhatsApp, as it expanded its capabilities beyond just text messaging and made it a more versatile communication tool.

Explanation
WhatsApp was initially launched on the Apple device. This means that the app was first made available for iPhone users before it was released on other platforms such as Android, BlackBerry, and Windows.