マリウス . The Day WhatsApp Goes Dark
A thought experiment in what we built without noticing.
Note: As usual, tl;dr at the end.
Tomorrow morning, WhatsApp goes dark, and it’s not just a short downtime, but<br>it is a termination of the service. The servers turn off, the domains don’t<br>resolve anymore and no mobile client is able to connect. Have you ever asked<br>yourself what would happen in that case? What if WhatsApp actually went dark?<br>Obviously, nobody really knows what would happen in such a case, because we<br>haven’t experienced that situation (yet), but even though the closest analogues<br>like the six-hour Meta outage in October 2021, and Brazil’s 12-hour<br>court-ordered shutdown in December 2015 were measured in hours, not days, those<br>already produced effects that journalists described as “apocalyptic”. We can<br>try to extrapolate what happened throughout events like those to see what<br>“global catastrophe scenario” could theoretically look like. Because whether<br>you believe it or not, WhatsApp is more than just a messenger, and one<br>example that makes this pretty obvious came from the Forbes editor José<br>Caparroso, who wrote<br>during the 2021 blackout<br>that …<br>Latin America lives on WhatsApp. I am surprised by so many people<br>underestimating how catastrophic this downfall has been.
But before we dive into this thought experiment, however, it’s worth<br>establishing what we’re actually talking about, as readers in most of Europe and<br>North America underestimate WhatsApp by an order of magnitude, primarily<br>because in those markets it functions as one platforms among many. That is,<br>however, not how the rest of the planet works.<br>Note: This thought experiment is not only based on some abstract numbers and<br>studies, but upon my own experience of how WhatsApp is being used in e.g. the<br>global south on a day to day basis. During my travels I think I’ve<br>pretty much “seen it all”, with for example broadband technicians taking<br>photos of the stickers on the backside of WiFi routers/modems, that show the<br>hardware address and login credentials (on their phones), and sending them<br>via WhatsApp to themselves, only so they can open them on WhatsApp Web (on<br>their work laptops), in order to upload them into the ISP’s technical service<br>portal. It is frankly mind-boggling what sort of tasks WhatsApp has become a<br>Swiss army knife for in those countries, whether it’s as a file transfer<br>platform for sensitive documents, or as a full-blown hotline for critical<br>services and infrastructure.
Scale<br>Banana for scaleLet’s start by understanding the sheer scale of WhatsApp. The Meta owned and<br>operated messenger has roughly<br>3.3 billion monthly active users<br>as of early 2026, which is about 40% of every human alive, and somewhere north<br>of 60% of every human with a smartphone. The platform processes<br>more than 100 billion messages per day,<br>out of which around 7 billion are voice messages. On top of that, users place<br>around<br>5.5 billion voice calls and 2.4 billion video calls per month,<br>which boils down to more than 2 billion minutes of voice and video traffic every<br>24 hours.<br>To put this in perspective, the global SMS network, at its peak in 2012, handled<br>about 23 billion messages per day across every carrier on Earth. WhatsApp does<br>four to five times that volume on its own, every day, on a service that is (at<br>least at the consumer layer) “free”.<br>However, if we look deeper into the country-level breakdown, it becomes clear<br>that WhatsApp usage isn’t evenly distributed across the globe. India has<br>between 535 million and 596 million<br>monthly active users,<br>and regardless of whether we pick the higher number or we stick with the more<br>conservative estimate, it is the largest single national user base on any<br>messaging platform anywhere. Brazil has about 148 million users, and the app is<br>installed on roughly 99% of the country’s smartphones. And 93% of those users<br>open the app daily.<br>Indonesia has about 112 million users, with WhatsApp being the leading<br>messaging platform in the country, and in Zimbabwe WhatsApp alone accounts for<br>roughly 44–50% of all<br>mobile internet traffic.<br>In Lebanon more than four in five adults<br>use it,<br>making it the dominant communications channel during multiple national crises.<br>In a great many countries, WhatsApp is not simply a service on the internet,<br>it actually is the internet for most practical purposes.<br>Business<br>WhatsApp Business now has more than 200 million businesses on the<br>platform globally,<br>with around 50 million small and medium-sized enterprises using it as their<br>primary customer channel. In India and Brazil, roughly 80% of small businesses<br>use WhatsApp to communicate with customers. In Brazil specifically, 96% of<br>businesses rate WhatsApp as their primary communication tool, and a joint<br>study by Fundação Getulio Vargas and Sebrae, Brazil’s main small-business<br>support organisation, found that<br>70% of Brazilian...