How to connect WhatsApp via QR Code
Connect the company's WhatsApp number by scanning a QR Code with your phone, just like WhatsApp Web. It takes about 2 minutes.
3 min readBasicUpdated on November 12, 2026
Where to find it in Cognizy
Video lesson coming soon. For now, follow the steps below.
With the QR Code, you connect to Cognizy the WhatsApp you already use on your phone, the same way you connect WhatsApp Web. Conversations will start arriving in Serve › Conversations, and the number will keep working on the device. This is the unofficial connection: for campaigns and high volume, prefer the official WhatsApp.
Where to find it in Cognizy
Before you start
- Only the owner and administrators can connect numbers.
- Have the phone with the company's WhatsApp number ready, unlocked and connected to the internet.
- Update WhatsApp on the phone before you start.
- WhatsApp allows up to four connected devices per number. If you already have four, disconnect one on the phone.
- Set aside about 2 minutes. The QR Code on the screen is only valid for a short time: keep your phone nearby before opening it.
Step by step
- Step 1:
At the bottom of the menu, click Settings.
- Step 2:
In Channels, click WhatsApp.
- Step 3:
At the top of the screen, click Connect WhatsApp.
- Step 4:
Choose Connect via QR Code, the last option in the list.
- Step 5:
The Scan with WhatsApp window opens, with the QR Code. Leave this window open and grab your phone. The QR Code in this screenshot is just an example: use the one that appears on your screen.
- Step 6:
On your phone, open WhatsApp. On Android, tap the three-dot icon; on iPhone, tap Settings. Then tap Linked devices and Link a device. If your phone asks, confirm with your fingerprint, face, or PIN.
- Step 7:
Point your phone's camera at the QR Code on the Cognizy screen. It scans automatically and takes just a few seconds.
- Step 8:
The window closes on its own and the number appears in the list as Connected. From here on, customer messages will arrive in Serve › Conversations.
How to know it worked
The number card shows Connected. Ask someone to send a message to the number: it will appear in Serve › Conversations within a few seconds. On the phone, Cognizy will start appearing in WhatsApp's Linked devices list.
If it doesn't work
The QR Code disappeared or the phone says it's no longer valid.
The QR Code is only valid for a short time. Close the window, click Connect WhatsApp › Connect via QR Code again, and scan the new code right after.
I can't find Linked devices on the phone.
On Android, it's under the three-dot icon on the WhatsApp home screen; on iPhone, in Settings. If it doesn't appear, update WhatsApp in the app store and try again.
The phone won't let me connect another device.
WhatsApp allows up to four connected devices. In Linked devices, tap one you no longer use, disconnect it, and scan the QR Code again.
The number connected, but after a few days it shows as disconnected.
WhatsApp disconnects linked devices when the phone goes 14 days without opening the app. Open WhatsApp on the phone from time to time. To reconnect, click Reconnect on the number card and scan the QR Code again.
The number is already connected in another system.
It may still be there, but it counts as one of the four devices. If messages aren't arriving in Cognizy, disconnect the other system in Linked devices and connect it again here.
Next step
Set who responds on this number (AI, team, and department) on the number card, in Service and receiving.
Sign in with your Cognizy account to save your progress.
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