> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.cal.id/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Connect with WhatsApp Business App

Follow these steps if you already have the **WhatsApp Business app** on your phone and want to connect it.

> **Note:** your address and Tax ID must be verified to trigger messages.

| Choose the connection method

Click **Connect WhatsApp Business app** on the integration screen to start connecting your existing app.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_1kxz8cr.png =483x615)

| Enter your phone number

Enter the number tied to your WhatsApp Business app (only verified numbers appear), then click **Next**.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_1ishcdn.png =490x615)

| Get your access code

Click **Use an access code instead** and note the code shown.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_1n4sdre.png =490x615)

| Enter the code on your phone

1. Open the **WhatsApp Business app**.
2. Go to **Menu / Settings**.
3. Open **Account › Business platform**.
4. Enter the access code and tap **Next**.
5. Paste the generated code.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/11111_1igtpwi.png =520x3238)

| Enter additional details

Fill in any required information and click **Next**.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_1pyvid2.png =490x615)

| Confirm the connection

Review the details and click **Confirm**.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_1dyhq3e.png =490x615)

| Scan the QR code

A QR code appears — scan it with your phone and follow the on-screen steps to finish.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_1x9ntwf.png =1152x615)