You can add new contacts to WhatsApp manually from the Chats tab or you can scan someone's QR code within the app.
To find someone on WhatsApp, you’ll need their phone number—just save it to your contacts, open WhatsApp, and check if they appear. You can also use their WhatsApp QR code to add them, search for them ...
You can start a WhatsApp video call from the Calls tab by looking up a contact or from a chat thread.
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