1. How to link a device | WhatsApp Help Center
Link: http://go.microsoft.com/fwlink/?LinkID=617350
Description: WEBWindows. Android. iOS. You can use WhatsApp on up to four linked devices at once without the need to keep your primary phone connected. Connect your primary phone every 14 days to keep linked devices logged in to your WhatsApp account. For the best experience, update to the latest version of WhatsApp. Link a device with QR code.
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