WhatsApp has been prepping support for multiple devices for months now — even longer if you consider its semi-functional existing web and desktop implementation as an intrinsic part of the process. The feature started to go live for some users a few days ago, and appears to be spreading widely now. Most beta app users should have it now, and it is making its way to non-beta users too. It's trivial to set up and, although most functionality is retained, it's still a little disappointing.

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