You can add new contacts to WhatsApp manually from the Chats tab or you can scan someone's QR code within the app.

As of October 2025, Duo Mobile's pricing structure also makes it an attractive option for enterprise, offering a tiered structure depending on needs and team size. For example, Duo Free offers ...

If you don't have an account just go to sign up page and register yourself and then sign in. If you already have an account then just sign in with your email & password. If you want to sign in/up with ...