If you’re a WhatsApp user who wants to access the latest features of the app before it rolls out to everyone, then you need to start using the WhatsApp Beta. WhatsApp lets you try out new features ahead of the public rollout so that it can test them out without risking breaking functionality for all users.
How to Install WhatsApp Beta for Windows Mobile or Windows Phone
Uninstall the WhatsApp app if you already have it on your phone. Note you risk losing your existing chats and data.
On your phone, download WhatsApp Beta or go to the Microsoft Store and search for “WhatsApp Beta”.
Once the store link opens, tap the Free button to start downloading the WhatsApp Beta.
Once the app is installed, enter your phone number and start using it as usual.