(This article is authored by Alar)

WhatsApp has rolled out a new feature that allows users to sync their chats across multiple devices without relying on their primary phone. The feature, called companion mode, is now available for all beta testers on Android and iOS. As of right now, Companion Mode is only available for the Android platform and lets you connect a secondary Android device. 

Companion mode lets users connect up to four devices at once, including tablets and computers, and access their WhatsApp account independently. This means users can still use WhatsApp even if their main phone is switched off, lost or broken. WhatsApp currently requires authentication from the primary device. This involves logging in on the secondary unit and also scanning a QR code with the primary device to get things up and running. 

According to WABetaInfo, you can even link up to four devices at once with the latest update. Of course, this is a fantastic feature for anyone that has more than one device, but there are some restrictions with the secondary devices, as a linked device doesn't currently possess full functionality like the primary device.  The sources also adds that this feature is currently Android-only and allows users to access their chats and conversations on a secondary phone without an internet connection on the primary device.

By downloading the most recent WhatsApp beta, you can test the feature on both devices. Tap the three-dot menu in the upper left corner of the registration screen for the secondary device. When you tap the 'Link a device' option, WhatsApp will display a QR code.

Now launch WhatsApp on your primary device, navigate to settings, and tap 'Linked devices'. Scan the QR code with your secondary phone or tablet, and it will be activated.  When you connect a secondary device, your chats and conversations are automatically synchronized.   You can now connect up to four devices to your primary account. All of your calls and messages will remain end-to-end encrypted on the secondary device.

In addition, any new messages or calls you receive are distributed to all of your connected devices. WhatsApp asserts that companion mode employs end-to-end encryption to protect messages and calls across all devices. In addition, users can view and manage their connected devices from the settings menu. 

In the future, WhatsApp intends to add more features and enhancements to companion mode. Companion mode is one of the most anticipated features for WhatsApp users, who have for a long time desired the ability to use the application on multiple devices independent of their phone. WhatsApp anticipates that companion mode will enhance the user experience and streamline communication.