WhatsApp Business on multiple devices

How to link another device

• On the other device, open web.whatsapp.com or the WhatsApp desktop app to show a QR code.
• On your main phone, open Linked devices (on Android from More options, the three dots).
• Tap Link a device, and confirm with your fingerprint or phone PIN if asked.
• Point the phone at the code. Your chats appear on the new device.

A second phone on the same number? It works as a linked device; WhatsApp explains the steps in “About linking your account to a second phone”. Don't register the number on the second phone: registering moves the account off your main phone.

The limits

• Up to four linked devices besides your main phone.
• The main phone registers the account and links new devices; a computer, browser or iPad can't be the main device.
• Linked devices work with the phone off, but log out after 14 days without the main phone, and a linked device unused for 30 days is unlinked.
• No live location and no broadcast lists on linked devices.

If a team replies from one number

Four devices cover a small team. But everyone sees every chat, nothing is assigned, nobody knows who answered whom, and a customer writing at 1 am gets no reply.

That's where an AI agent helps: it replies to every customer at any hour from your information and hands you the requests with a summary, while your team follows up from one inbox. Auto-reply vs an AI agent.

If your number joins the WhatsApp Platform (API)

• Meta lets you keep using the WhatsApp Business app on the same number, with up to four linked devices.
• Joining unlinks every linked device; link them again afterwards with the steps above.
• WhatsApp for Windows and WearOS aren't supported as linked devices on a Platform number; use the browser or the Mac app.

More in app vs API.

Sources: “About linked devices” and “How to link a device” on WhatsApp Help Center, and Meta's page on onboarding WhatsApp Business app users. Read Nov 5, 2026.