Can customers hide their number from my business on WhatsApp?

Yes, once they adopt a WhatsApp username. If a customer has one when they first chat with you, you won't see their phone number unless they choose to share it.

• Usernames are optional for customers and are rolling out gradually, so many chats will still show a number.
• If you already have a customer's number from an earlier chat, you keep seeing it.
• You can ask for it. A quick reply can prompt the customer to send their number, their username or both.
• On the API, your provider must support business-scoped user IDs (BSUID), or you can lose the ability to process messages from customers with usernames.
• A business username doesn't hide your own number. Your business phone number stays visible on your profile.