WhatsApp revealed multi-device capability in the beta version as part of their early access to selected beta testers for Android and iOS approximately eight months ago. WhatsApp is now planning to release its multi-device feature for Android and iOS devices in the coming weeks.
With this multi-device update, you will be using WhatsApp on up to four linked desktop devices at the same time, without needing an active internet connection on your phone. This update will be available on supported platforms in the following weeks.