Can customers search for my restaurant inside WhatsApp?

Only by an exact username match, and only if you have claimed one. WhatsApp's business directory is available only in Brazil, so most restaurants must share their own link or QR code.

• Username: a business username can be found in WhatsApp search, but only when the customer types it exactly.
• Directory: WhatsApp's business directory is currently available only in Brazil.
• Google: add your phone number to your Google listing and a WhatsApp click-to-chat button shows in Search and Maps.
• Put your WhatsApp link or QR code on Instagram, packaging and tables so customers can start a chat.