In this article we explain how to change the Phone number in WhatsApp Messenger, We will explain this for WhatsApp Messenger on the BlackBerry.
First, open the WhatsApp Messenger and press the settings icon in down, then click on Chat Settings as the following picture:
Now click on the Key BlackBerry mark , Until you see the menu:
Click on the Change Phone Number, as in the following picture:
A confirmation message appears, select Yes