> ## Documentation Index
> Fetch the complete documentation index at: https://cal.id/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect with WhatsApp Business App

> Link an existing WhatsApp Business app on your phone to Cal ID using an access code and QR scan so bookings can trigger WhatsApp reminders and follow-ups.

Follow these steps if you already have a **WhatsApp Business app** installed on your mobile device and want to link it to Cal ID.

<Info>
  Your address and Tax ID must be verified to trigger the message.
</Info>

<Steps>
  <Step title="Select the connection method">
    From the integration screen, click **Connect WhatsApp Business app**. This opens the connection process for your existing app.

    <Frame>
      <img src="https://mintcdn.com/cal-id-docs/k1VHQ7P5ONAHeLvP/images/workflows/connect-whatsapp-app-1.png?fit=max&auto=format&n=k1VHQ7P5ONAHeLvP&q=85&s=f0803e9fcfc1c20a4e149ea15570e75a" alt="Connect WhatsApp Business app option" width="1258" height="1600" data-path="images/workflows/connect-whatsapp-app-1.png" />
    </Frame>
  </Step>

  <Step title="Enter your phone number">
    Type the phone number associated with your WhatsApp Business app, then click **Next**. Only **verified phone numbers** are shown here.

    <Frame>
      <img src="https://mintcdn.com/cal-id-docs/k1VHQ7P5ONAHeLvP/images/workflows/connect-whatsapp-app-2.png?fit=max&auto=format&n=k1VHQ7P5ONAHeLvP&q=85&s=25fee5237c3f96e2652e87da8300b28c" alt="Entering the WhatsApp Business phone number" width="1276" height="1600" data-path="images/workflows/connect-whatsapp-app-2.png" />
    </Frame>
  </Step>

  <Step title="Get your access code">
    Click **Use an access code instead** to generate a secure access code, and note it down.

    <Frame>
      <img src="https://mintcdn.com/cal-id-docs/k1VHQ7P5ONAHeLvP/images/workflows/connect-whatsapp-app-3.png?fit=max&auto=format&n=k1VHQ7P5ONAHeLvP&q=85&s=e83fb1b1075cbbd3f60df3d4949d75cf" alt="Using an access code instead" width="1276" height="1600" data-path="images/workflows/connect-whatsapp-app-3.png" />
    </Frame>
  </Step>

  <Step title="Enter the code on your mobile device">
    On your phone:

    1. Open the **WhatsApp Business app**.
    2. Go to **Menu** or **Settings** by tapping the menu icon.
    3. Select **Account**.
    4. Select **Business platform**.
    5. Enter the **access code** you copied earlier.
    6. Click **Next**.
    7. Paste the generated code.

    <Frame>
      <img src="https://mintcdn.com/cal-id-docs/k1VHQ7P5ONAHeLvP/images/workflows/connect-whatsapp-app-4.png?fit=max&auto=format&n=k1VHQ7P5ONAHeLvP&q=85&s=b2649401e49ece16ed65db9615f9582a" alt="Entering the access code in the WhatsApp Business app" width="257" height="1600" data-path="images/workflows/connect-whatsapp-app-4.png" />
    </Frame>
  </Step>

  <Step title="Enter additional data">
    Complete any additional details requested, then click **Next**.

    <Frame>
      <img src="https://mintcdn.com/cal-id-docs/k1VHQ7P5ONAHeLvP/images/workflows/connect-whatsapp-app-5.png?fit=max&auto=format&n=k1VHQ7P5ONAHeLvP&q=85&s=1cf6d22bf0e1f7003b46dfecbc217ba8" alt="Filling in additional required information" width="1276" height="1600" data-path="images/workflows/connect-whatsapp-app-5.png" />
    </Frame>
  </Step>

  <Step title="Confirm the connection">
    Review all details to check that everything is correct, then click **Confirm**.

    <Frame>
      <img src="https://mintcdn.com/cal-id-docs/k1VHQ7P5ONAHeLvP/images/workflows/connect-whatsapp-app-6.png?fit=max&auto=format&n=k1VHQ7P5ONAHeLvP&q=85&s=b183bc84c6460d857c7d83fc4d3e3293" alt="Confirming the connection setup" width="1276" height="1600" data-path="images/workflows/connect-whatsapp-app-6.png" />
    </Frame>
  </Step>

  <Step title="Scan the QR code">
    A QR code page appears. Scan the code with your mobile device and follow the on-screen instructions to complete any additional steps.

    <Frame>
      <img src="https://mintcdn.com/cal-id-docs/k1VHQ7P5ONAHeLvP/images/workflows/connect-whatsapp-app-7.png?fit=max&auto=format&n=k1VHQ7P5ONAHeLvP&q=85&s=bd55ef88f1213e04e7ccc433106916fd" alt="Scanning the QR code to complete the connection" width="1561" height="833" data-path="images/workflows/connect-whatsapp-app-7.png" />
    </Frame>
  </Step>
</Steps>

<Check>
  Your WhatsApp Business app is connected to Cal ID and ready to send workflow messages.
</Check>


## Related topics

- [Integrate WhatsApp Business](/docs/workflows/whatsapp-business.md)
- [Create New WhatsApp Business Account](/docs/workflows/create-whatsapp-account.md)
- [Workflows Setup to Cal ID](/docs/workflows/overview.md)
- [Customizing Your Workflow Messages](/docs/workflows/custom-messages.md)
- [Install New App on Cal ID](/docs/apps/install-app.md)