You can visit the WhatsApp Manager on Facebook to change your profile picture, display name, and business details such as description, address, email, and website.

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How to customize your WhatsApp Business profile

  1. Go to the WhatsApp Manager on Facebook.
  2. From the sidebar, click on the Phone numbers tab.
  1. Find your phone number from the list and click on the settings icon next to it.
  1. From here, you can update the profile information for your WhatsApp Business account.