
It will be unwise to deny the benefits of using the same WhatsApp account on two devices.
People these days carry two phones to keep their work/business life separate from their personal lives.
Now, while using two phones few users like me would like to use WhatsApp with the same number on both the phones as personally, I don’t use it for work. So, on my business phone too, I would like to have my personal WhatsApp Account.
Officially it’s not yet possible to use the same WhtsApp Account on two devices at the same time.
At a particular point in time, you can only use the same account on one device only. However, Facebook has recognized the demand and the Whatsapp Team is already working on this feature.
Let’s refer to the two devices as phone one and phone two. Phone one has the WhatsApp app installed, with the phone number officially registered in its settings. Phone one also has all of the previous conversation histories and media. Now you want to use the same number on phone two’s WhatsApp, have access to those conversations and media attachments, and sync any changes across both devices.
So how do you do it? Well, not by using the WhatsApp app on phone two. That will require a totally separate number, and although you can officially transfer your WhatsApp messaging history between phones, it won’t sync between devices. The transfer is one-way and is meant for users who are permanently changing devices.
Instead, this is one of the ways to take advantage of Whats App Web.
On phone two, open your internet browser and go to https://web.whatsapp.com. The mobile version of the site will automatically push the app on you. Right away, request the desktop version of the website.

When it switches to the desktop site, you’ll see the QR code for linking devices.
Over on phone one, go to Settings—>Linked Devices. Tap Link a Device and when the QR code scanner appears, scan the code on phone two.
The two phones will now link together, sync messaging, and so forth. However, you will immediately see that WhatsApp desktop is not optimized for mobile devices. So, as I said before, this is not the most elegant solution, especially for protracted chat sessions. But for the purposes of checking for new messages and quickly firing off a quick note to someone, it’ll work. The screenshot below actually makes it look bigger than it actually is. In reality, you will need to pinch and zoom in to read messages.



