WhatsApp Web calling reached South Africa over the long weekend, adding voice and video calls to the browser version of the platform for one-on-one conversations and groups of up to 32 people.

It runs on Windows, Linux and macOS, and works best in Chrome, Edge, Safari and Firefox. If the prompt has not appeared yet, log out of WhatsApp Web and back in, and check that both your browser and your mobile app are current.

Individual chats get separate camera and handset icons, while group chats show only a camera that opens options for voice, video or a shareable call link.

The feature shipped globally on 28 July as one of five changes, released gradually rather than all at once. Alongside browser calling, Call Transfer moves a live call between your signed-in devices without dropping it, a Waiting Room lets a host approve people joining through a link, QuickHD delivers high-definition video in the opening seconds instead of the usual slow sharpening, and noise suppression can be toggled mid-call.

Web calls are end-to-end encrypted with no time limit, and carry screen sharing, reactions and a Calls tab holding full history.

The local backdrop is the more interesting part: ICASA's latest sector report recorded SMS and MMS revenue collapsing from R4.1bn to R2.6bn in twelve months, a 37.9% fall, while national mobile traffic climbed to 88.6 billion minutes from 73 billion.

Hypertext notes the official explanation is fairly barebones, and recommends a headset since separate microphone and speaker hardware can cause echo. WhatsApp pitches browser calling at people on shared computers and locked-down work laptops that block app installs. TechCentral reports ICASA has recommended a full market enquiry into over-the-top communication and streaming services, and that voice now makes up 29% of Vodacom's South African service revenue.

Removing the download is the entire point, and it lands harder here than in most markets. A locked-down work laptop, a shared machine at a training centre, a Chromebook, a thin-client till system: all of those could already run WhatsApp Web for messages and can now take calls without anyone filing an IT request.

Same logic as YouTube Playables shipping as HTML5, and it works for the same reason, because storage and data remain real constraints in this market.

For the operators, the picture is worse than another feature release implies. ICASA's own figures show minutes rising while the revenue attached to them falls off a cliff, and WhatsApp has just made the substitute available on every machine in the building with nothing to install. Expect that market enquiry to gain momentum, and expect the fight to be about who funds the network rather than who owns the customer.

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