It´s much easier to install OGWhatsApp than it might seem at first. You just have to follow these three steps:
-The first step is to make a backup copy of all of your messages (if you want to save them) and then delete all of the user information for the app (or you can just reinstall the app)
-The second step is to rename the /sdcard/WhatsApp directory to /sdcard/OGWhatsApp. You can do this using any file manager for Android, though it is easier to do this from Windows.
-The third and last step is to verify your old number in the OG version of WhatsApp, and then verify your new number in the normal version of WhatsApp. That's it.
OGWhatsApp is a very useful tool for users who want to have two WhatsApp telephone numbers on their Android device.