► マリウス . The Day WhatsApp Goes Dark
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A thought experiment in what we built without noticing.
Note:As usual,tl;drat the end.
Tomorrow morning,WhatsAppgoes dark, and it’s not just a short downtime, but
it is a termination of the service. The servers turn off, the domains don’t
resolve anymore and no mobile client is able to connect. Have you ever asked
yourself what would happen in that case? What ifWhatsAppactually went dark?
Obviously, nobody really knows what would happen in such a case, because we
haven’t experienced that situation (yet), but even though the closest analogues
like the six-hourMetaoutage in October 2021, and Brazil’s 12-hour
court-ordered shutdown in December 2015 were measured in hours, not days, those
already produced effects that journalists described as“apocalyptic”. We can
try to extrapolate what happened throughout events like those to see what“global catastrophe scenario”could theoretically look like. Because whether
you believe it or not,WhatsAppis more thanjust a messenger, and one
example that makes this pretty obvious came from theForbeseditorJosé
Caparroso, who wroteduring the 2021 blackoutthat …
Latin America lives onWhatsApp. I am surprised by so many people
underestimating how catastrophic this downfall has been.
But before we dive into this thought experiment, however, it’s worth
establishing what we’re actually talking about, as readers in most of Europe and
North America underestimateWhatsAppby an order of magnitude, primarily
because in those markets it functions as one platforms among many. That is,
however, not how the rest of the planet works.
Note:This thought experiment is not only based on some abstract numbers and
studies, but upon my own experience of howWhatsAppis being used in e.g. theglobal southon a day to day basis. During mytravelsI think I’ve
pretty much“seen it all”, with for example broadband technicians taking
photos of the stickers on the backside of WiFi routers/modems, that show thehardware address and login credentials(on their phones), and sending them
viaWhatsAppto themselves, only so they can open them onWhatsApp Web(on
their work laptops), in order to upload them into the ISP’s technical service
portal. It is frankly mind-boggling what sort of tasksWhatsApphas become aSwiss army knifefor in those countries, whether it’s as a file transfer
platform for sensitive documents, or as a full-blown hotline for critical
services and infrastructure.
Scale
Let’s start by understanding the sheer scale ofWhatsApp. TheMetaowned and
operated messenger has roughly3.3 billion monthly active usersas of early 2026, which is about 40% of every human alive, and somewhere north
of 60% of every human with a smartphone. The platform processesmore than 100 billion messages per day,
out of which around 7 billion are voice messages. On top of that, users place
around5.5 billion voice calls and 2.4 billion video calls per month,
which boils down to more than 2 billion minutes of voice and video traffic every
24 hours.
To put this in perspective, the global SMS network, at its peak in 2012, handled
about 23 billion messages per day across every carrier on Earth.WhatsAppdoes
four to five times that volume on its own, every day, on a service that is (at
least at the consumer layer)“free”.
However, if we look deeper into the country-level breakdown, it becomes clear
thatWhatsAppusage isn’t evenly distributed across the globe. India has
between 535 million and 596 millionmonthly active users,
and regardless of whether we pick the higher number or we stick with the more
conservative estimate, it is the largest single national user base on any
messaging platform anywhere. Brazil has about 148 million users, and the app is
installed on roughly 99% of the country’s smartphones. And 93% of those usersopen the app daily.
Indonesia has about 112 million users, withWhatsAppbeing the leading
messaging platform in the country, and in ZimbabweWhatsAppalone accounts for
roughly 44–50% of allmobile internet traffic.
In Lebanon more than four in five adultsuse it,
making it the dominant communications channel during multiple national crises.
In a great many countries,WhatsAppis not simply a service on the internet,
it actuallyisthe internet for most practical purposes.
Business
WhatsApp Businessnow has more than 200 million businesses on theplatform globally,
with around 50 million small and medium-sized enterprises using it as their
primary customer channel. In India and Brazil, roughly 80% of small businesses
useWhatsAppto communicate with customers. In Brazil specifically, 96% of
businesses rateWhatsAppas their primary communication tool, and a joint
study byFundação Getulio Vargas and Sebrae, Brazil’s main small-business
support organisation, found that70% of Brazilian small companiesrely on theMeta-owned trinity (WhatsApp,Instagram,Messenger) as their
marketplace.
Globally, around $45 billion in commerce is expected toflow throughWhatsAppin 2026.Click-to-WhatsAppadvertisements alone generate roughly $10 billion per year
forMeta. About 175 million customers send messages toWhatsApp Businessaccounts every single day. And then there’s payments.
In India,WhatsApp Payis a small player in theUPIwith about67 million transactions per monthagainst UPI’s 18 billion monthly volume, but in absolute terms, that’s still an
enormous number of transactions. In Brazil,WhatsApp Payis integrated with
localcard and bank railsand
is used by transit operators (Vai de Bus, for instance, sells passes viaWhatsApp), banks, and merchants. Across Africa,fintechoverlays onWhatsApp, likeFinnovain Nigeria, orAzzain Nigeria, Kenya, and South
Africa, are processing crypto and conventional payments at significant volumes.
Healthcare
Besides being a chat platform, a marketplace and a payment processor,WhatsAppis also being used as critical clinical infrastructure across the global south.
A three-year programme atUCLA’s David Geffen School of Medicinepaired
subspecialists in Los Angeles with clinicians atPartners in Hope Medical
Centerin Lilongwe, Malawi, viaWhatsAppgroups. 89% of submitting clinicians
and 71% of expert respondentsreportedthat the case
discussions improved medical education and patient outcomes.
In theEastern Cape of South Africa,WhatsAppgroups serve as the primary continuing-medical-education channel forHIVandTBmanagement in rural clinics where specialists are days away. In
Haiti,WhatsAppgroups coordinate emergency department operations atHôpital Universitaire de Mirebalais,
including mass-casualty alerts, security updates, and clinical decisions. In
Zambia,IntraHealth Internationalruns nurse and midwife mentoring networks overWhatsApp. In Brazil, the link
betweenZikavirus infection and microcephaly was tracked partly throughWhatsAppgroups of paediatricians comparing cases.
Disaster response
Another critical field that runs onMeta’s infrastructure is disaster
response.The World Bankdocumented that during 2014’sCyclone HudhudinAndhra Pradesh, India,
thePublic Works Departmentrestored connectivity to a 1.8-million-person city
primarily by coordinating engineers through a closedWhatsAppgroup with the
District Magistrate in it, without any formal meetings and orders, which
ultimately led to most roads becoming functional within three to four days.
During the 2023 Turkey earthquakes, volunteer-formedWhatsAppnetworksprocessed 5,800+ messages in one weekfor needs assessment and rescue, and in Syria, theWhite Helmetshave run an emergency dispatch system overWhatsAppsince 2021, because the
country’s emergency number infrastructure is largely destroyed andWhatsApp’s
compression algorithms work where almost nothing else does.
Governments
It’s not just individual organisations, but even whole governments are dependent
onMeta. Buenos Aires for example ran a COVID-symptom triage chatbot onWhatsApp, and Lebanon’s public health ministry launched an automatedWhatsAppservice in April 2020 to disseminate updates on the pandemic. India,
on the other hand, offers metro tickets, government services, and bill payments
throughWhatsAppchat interfaces.
On top of that, for example, the Philippines’ UAE consulate operates consular
emergency hotlines on, you guessed it,WhatsApp.
Migration
Last but not least, there’s migration. Roughly a quarter-billion people live
outside their country of birth. Most of them useWhatsAppas their primary
connection to family, because international SMS is expensive and unreliable and
Skype is, well, dead. Multiple peer-reviewed studies onTrinidadian, Pakistani,Ghanaian,
Polish, andKenyandiasporas also converge on the same finding ofWhatsAppbeing the primary
technology of transnational family life in 2026.
Let’s play a game
So to go back to our initial thought, let’s imagineWhatsAppshutting down in
an instant, with this dependency graph in mind.
What follows is a hypothetical scenario sketched from the documented impacts of
past (shorter) outages, scaled up by the duration and finality of the event, and
informed by the dependency layers described above. It’s a scenario and not an
actual prediction.
T + 1 hour
The shutdown hits during European afternoon, which means American morning,
Indian evening, East African afternoon, and Indonesian late evening. The first
signals show up onDowndetectorand on non-Metacompetitors. In 2021, the
six-hour outage generated 14 million reports inside the first few hours, but
this time the number is likely much larger.
Behaviour inside the first hour is uneven and largely confused. In most places,
users assume it’s a routing problem, a local carrier issue, or a phone bug. They
restart the app, then their phone, then their router, then they checkTwitterX,Instagram,TikTok,Telegram, maybeSignal, orFacebook Messenger, depending on what they have installed.TelegramandSignalboth see app-store download spikes within the first 30 minutes, as it
happened during the 2021 outage, withSignalreportedlyadding “millions” of users that day.
The first noticeable failures show up in commerce. A food-truck operator in São
Paulo who takes orders viaWhatsAppcan no longer receive them. A small
clothing brand in Mumbai whose entire sales pipeline runs throughClick-to-WhatsAppadvertisements sees its ad spend continuing to bill while
the conversation endpoint returns errors. In Hong Kong, a logistics coordinator
who confirms container pickups viaWhatsApploses the day’s confirmation
chain. In Idlib, Syria, theWhite Helmetsdispatch room realises within
minutes that emergency calls are not coming in, and civilians have no fallback
channel.
T + 12 hours
It is likely that three things start happening in parallel. First,mass
migrationto apps likeTelegram,Signal, and to a lesser extentMessages(iMessage),Viber, andLine.Signal’s servers, which are run on a
fraction ofWhatsApp’s infrastructure, are not designed for an inrush of
hundreds of millions of new accounts and start to degrade in some regions.Telegram, which has spent a decade preparing for exactly this scenario, holds
up better but still struggles with its own issues. Ultimately none of the
alternatives are suitable for the people who had built their workflows onWhatsApp.
The second thing that happens iscommercial collapse, which is the biggest
12-hour story, but still largely invisible from Western media. In Brazil,
Indonesia, Nigeria, India, Pakistan, Bangladesh, Vietnam, Mexico, and probably
50 other countries, the small businesses that route everything from orders and
prices, and photos of goods, to delivery confirmations, and payments, throughWhatsApphave lost their primary revenue channel.A clothing brand in Irelandreportedly lost thousands of euros in a single afternoon during the 2021
six-hour outage. Multiply this by twelve hours and by the entire tail of
informal commerce that lives on the platform and the figure runs into the
billions.
The third thing ishealth-system stress. Group consults that normally take an
hour overWhatsAppbecome almost impossible. TheEastern CapeHIV-management
network in South Africa, theMalawi-UCLAclinical link, the Haitian ED
coordination groups, the Zambian rural-nurse mentoring channels, all degrade
simultaneously, and while mortality consequences are not yet visible, they are
happening nonetheless.
In several countries, government officials begin issuing statements through
whatever channel is still functioning.
T + 1 day
After the first 24 hours it becomes clear that the impact this situation has is
roughly inversely proportional to a country’s investment in alternative digital
infrastructure. The United States and Western Europe are mildly inconvenienced,
and India is moderately disrupted, mainly because the country has built
duplicate rails, henceUPIruns over many apps. After all, SMS still works,
alternative payment apps exist, and government services have their own portals.
However, countries like Brazil, Argentina, Mexico, and most of sub-Saharan
Africa, on the other hand, are in serious trouble.
In Brazil, by the end of day one, the financial press is comparing the situation
to a partial shutdown of the national payments system.Pixtransfers still
work, as those run over the central bank’s infrastructure and notWhatsApp’s,
but the merchant-customer communication layer that drivesPixtransactions for
millions of small operators is offline. The same is true in Argentina, where the
inflation-driven culture of constant price renegotiation between vendors and
customers happens, in practice, almost entirely onWhatsApp.
Another area that starts to fail is migrant remittance. People working in the
Gulf, North America, or Europe typically coordinate transfers with their
families viaWhatsApp, where they confirm the recipient’s details, send
screenshots of receipts, or sometimes route the money through informalHawala-style networks where trust is established and maintained by daily
messaging. These workflows don’t fail completely on day one, but they slow and
break in ways that don’t show up in formal remittance statistics for another
week or two.
In Latin America, the first major political consequence appears in the form of
misinformation that previously circulated withinclosedWhatsAppgroups,
which now has nowhere to go and starts spilling onto other platforms.
By the end of day one, more than 100 million people have createdSignalorTelegramaccounts. Both apps experience their first significant performance
degradation events.
T + 2 days
The labour-market consequences start showing up. In India, whereWhatsAppis
the de facto recruiting and onboarding tool for huge segments of the informal
economy, gig workers can’t be reached for shifts. Delivery platforms likeSwiggy,Zomato,Dunzo, and their international equivalents, see their
dispatch coordination degrade. Some of these companies have parallel in-app
messaging, but many have leaned hard onWhatsAppbecause it was cheaper.
Schools also begin to feel it, because in many countries, including India,
Brazil, South Africa, Kenya, Nigeria, the Philippines, Indonesia, and much of
the Middle East, parent-teacher communication runs overWhatsAppgroups. Two
days in, schools that have not made the switch to other channels are operating
partially blind, and parents are not getting closure notifications, transport
updates, fee reminders, or exam schedule changes. In countries with weak
alternative communication infrastructure, the second-order effect is mid-week
absenteeism as parents simply don’t know whether school is open.
On top of it all, Healthcare is also heavily impacted. For example, the Haiti
emergency-department-style coordination groups have now had 48 hours to find
alternatives, and they have, mostly, but the transition has costs. Case
discussions that were asynchronous and 24/7 onWhatsAppare now synchronous
and harder to schedule, and rural clinicians in places like the Eastern Cape,
Lilongwe, or the highlands of Nepal are once again practising in the relative
isolation thatWhatsApp’s group-call and group-message features had
alleviated. In several documented studies, isolation correlates with diagnostic
delays and worse patient outcomes. In Syria, theWhite Helmetsswitch to a
patchwork ofSignal, SMS where it works, and physical runners, and response
times degrade significantly.
T + 3 days
At this point things start to get political. In a number of countries, including
Brazil, India, Indonesia, Nigeria, the Philippines, and South Africa, the
question stops being“what isMetadoing”and starts being“why did we let
one foreign company become this central”.
Telecom operators in several countries pitch the moment as an opportunity to
push their own messaging products, most of which have been moribund since 2014,
but the pitches fail because nobody trusts the carriers, because those carriers
have been quietly delighted to seeWhatsAppgone, given that it eroded their
SMS and voice revenue for a decade. In a few markets, regulators float
emergency-decree-style proposals to nationalise messaging infrastructure or
build sovereign alternatives. And while most of these proposals are clearly
performative, some are not. India and Brazil both have working national digital
identity and payments stacks that could, in principle, host a public messaging
layer. It remains to be seen, though, whether the political will to build one
persists past the first month.
Public health authorities in Lebanon, Buenos Aires, the Philippines, and several
African countries are now running emergency communication operations across
multiple fallback channels. None of them work as well asWhatsAppdid and
things like vaccination schedules are missed, and appointment reminders fail.
Some clinics see patient no-show rates rise by 30–40% versus baseline. Not
becauseWhatsAppis superior to its competitors, but simply because humans
need a long time to adjust to the alternatives that are being put in place.
Also, crime patterns shift in interesting ways. AConflict Sensitivity Resource
Facilityreport on South Sudan, andPeaceRepwork on Somalia, bothdocumentedthatWhatsAppgroups were used for both peace-building and for coordinating
violence. Removing the platform doesn’t remove either function, as both migrate
to other channels, but the migration takes time, and during the transition,
coordination of all kinds becomes harder.
In several markets, online ad spend collapses becauseClick-to-WhatsAppads (a
$10B/year business) have no destination, andMeta’s stock price has already
done what you’d expect it to do.
T + 5 days
The migration to alternatives, mostlyTelegramandSignal, with regional
pockets going toLine,KakaoTalk,WeChat,Messages(iMessage),RCS,
and a long tail of smaller apps, has now hit critical mass in most of the world.
The migration has not been clean, and group chats with over 200 members have, in
practice, often migrated as group chats with around 40 members, because not
everyone moved at the same time or to the same app.
For business communication, the new world is as fragmented as it gets. A
Brazilian shopkeeper who used to take all orders onWhatsAppnow has to manageTelegram,Signal,InstagramDMs (still up, but reduced afterMeta’s
reputational damage), and SMS. Customer-acquisition costs rise, and
customer-retention drops, and several reporters publish stories on small
businesses that have permanently closed.
For healthcare, the migration is more orderly because the user base is smaller
and more motivated. Most major peer-support networks, like theMalawi-UCLA,
theEastern Cape HIV, theZambia nursing, and theHaiti emergencyhave
stable new homes. The five-day disruption produced measurable degradation, and
it is not yet possible to quantify the mortality and morbidity impact.
In Syria, theWhite Helmetshave built a partial replacement onSignaland
on a custom dispatching tool that their engineers had been prototyping. It works
less well than what they had, because the compression behaviour that madeWhatsAppviable in low-bandwidth, intermittently-connected environments is
hard to replicate. Hence, some dispatches are now arriving via paper notes. Not
becausedecentralized mesh networksdon’t exist, but
simply because nobody in these organizations has the expertise to implement
these alternatives, especially within such a short period of time.
The first credible economic estimates of the shutdown’s cost reach the tens of
billions of dollars and continue to rise. The estimates are dominated by
long-tail effects in emerging markets that are hard to measure precisely.
T + 7 days
A week in, the question has shifted from“When doesWhatsAppcome back?”to“What does the world look like without it?”and a growing fraction of the user
base assumes it isn’t coming back, so behaviour begins adapting accordingly.
Several governments, including Brazil, India, and the EU as a bloc, have
announced formal investigations or task forces into how to prevent this from
happening again. As usual, however, none of them will produce anything
actionable within years. The longer-term effects, that you can already see the
shape of by day seven are a measurable productivity hit in emerging markets,
particularly for informal-sector businesses, a consumer trust impact across the
entireMetaproduct family, a wave ofWhatsApp-replacementstartups, most of
which will fail due to network effects and generally bad engineering, and the
painful realisation that afreeproduct is not the same thing as a public
good.
Some estimates fromprior outage studiessuggest that a six-hourWhatsAppoutage cost the global economy hundreds of
millions of dollars per hour in lostSMEactivity, weighted heavily toward
Latin America, South Asia, and Africa. Extrapolated over seven days and weighted
for cascading effects, the seven-day damage is in the tens of billions, possibly
higher.
Summary
This thought experiment is not aboutMetaeventually shutting downWhatsApp,
as it almost certainly won’t do so on its own, given how big of a lever the
platform is for the company. In fact,Metais moving in the opposite
direction, as it is buildingWhatsApp Businessinto a $45 billion commerce
platform, integrating it with payments, and turning ads into one of its
fastest-growing revenue lines.WhatsAppis too valuable toMetato switch
off voluntarily, and the regulatory regimes in the countries that depend on it
most are nowhere near coordinated enough to force a switch away from it or even
just ban it outright.
The point is that we have built a planet-spanning piece of communication
infrastructure whose ownership, governance, and continuity are concentrated in a
single American corporation, that is led by people with questionable values and
beliefs, which all in all is a state of affairs that has no historical
precedent. Sure, there are other US-based companies that“own digital
communications”, likeTwitterXand many others, albeit I’d argue that
none of those platforms are so engrained into everyday life across many
(predominantly developing) nations asWhatsAppis today. The closest analogue
in scale is the global SMS network of the early 2000s, which, however, was
federated, run by hundreds of carriers and governed by an open standard
(GSM/3GPP). SMS was never under the unilateral control of any single entity,
despite many carries enjoying a defacto monopoly in their respective home
markets.
WhatsApp, on the other hand, is a single proprietary protocol, with a single
operator, optimised increasingly for the commercial interests of that operator,
and treated by the rest of the world (governments, hospitals, schools, small
businesses, families separated by borders) as a public utility. The seven-day
scenario above is an exercise in realising this dependency.Metahas no
public-service mandate andWhatsApp’s terms of service explicitly disclaim any
commitment to availability. Yet a meaningful fraction of the medical
communication, emergency coordination, family contact, and small-business
activity of theglobal southruns on top of this disclaimed-availability
infrastructure.
At this point theLinkedInthought-leadershipcrowdwould
tell you the answer is“diversification”or“resilience”or“multi-channel
strategy”and add an inspirational quote alongside theChatGPT-inserted
emojis. Telling a Karachi tailor with 14 customers in aWhatsAppgroup to“diversify their customer-communication stack”does nothing to solve the
problem. The infrastructure they depend on was built and made free at the point
of use by a corporation that calculated, correctly, that owning that
infrastructure was worth more than charging for it. The bill is paid in
attention, in advertising, in data, and in the asymmetric powerMetanow holds
over a substantial fraction of global communication.
While the shutdown will (sadly) not happen any time soon, the dependency,
however, exists, and the thought experiment is worth running occasionally (with
other services as well… looking at you,Google Mail!) because this exact
dependency is what should push us to look for alternatives, and not the
implausible event that would make it visible. Network effects may be the biggest
drivers for this unhealthy dependency, but I believe that each and every person
has the ability to make an impact within their families, their friend-circles
and their communities, by choosing to useanything butWhatsAppas their main communications channel, ideally aself-hosted alternative.
For almost three decades now we’ve hadXMPPavailable to us, with popular and
capable implementations likeejabberd,Prosody, andSnikketexisting
as open-source software that is ready to be used for communications platforms of
any size. As a matter of fact,WhatsAppusesXMPPbehind the
scenesand is in fact built
upon the samegreat technology stackused byejabberd.
For a“lower-level”alternative, there’s thegood ol’IRCthat has been around for
almost four decades and that isstill thriving.
Both of these open standards would allow communities, organisations and even
whole governments to build public infrastructure that could in large parts
replaceWhatsApp.
PS:Are you aJabberuser already? Come join thecommunity
channel!
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