To set up a business account on WhatsApp, follow these steps:

1. Download and install the WhatsApp Business app on your smartphone.
2. Open the app and agree to the terms and conditions.
3. Verify your business phone number. Note that you cannot use a landline number for verification.
4. Enter your business name and profile picture. Make sure to use a recognizable logo or image.
5. Set up your business profile by providing information such as your business address, description, email address, and website.
6. Customize your business settings by adding quick replies, frequently asked questions (FAQs), and greeting messages.
7. Start communicating with your customers by creating a broadcast list or by using WhatsApp Business API.

Remember to adhere to WhatsApp’s policies and guidelines, especially those related to spam and automated messages, to avoid getting banned or suspended from using the platform.