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

# Enable Phone Number Validation

> Enable phone number validation to ensure accurate inputs, improve lead quality, and prevent invalid submissions in your funnels.

Phone Number Validation is a built-in feature of the **Phone Number Input Field** that ensures users enter valid and properly formatted phone numbers.

This helps improve **lead quality** and reduces invalid or incomplete submissions.

***

<video src="https://mintcdn.com/landerlab-babdc23f/iim-yqLLTb3Wc_II/videos/Phone-validation-1.webm?fit=max&auto=format&n=iim-yqLLTb3Wc_II&q=85&s=793aff1d31cc9d55472741226052e8d0" controls={true} data-path="videos/Phone-validation-1.webm" />

## How to Enable Phone Number Validation

### 1. Open the Quiz Builder

* Navigate to your landing page
* Click **Edit Quiz**
* Go to the step where the phone number field is located

### 2. Select the Phone Number Field

* Click on the **Phone Number Input Field**
* The settings panel will open

### 3. Enable Validation

* Locate the **Phone Validation** setting
* Click **Enable** to activate validation

When enabled, the system will automatically check if the entered number is valid before allowing the user to continue.

To disable validation, simply click **Disable**.

### 4. Save and Test

* Click **Update**
* **Publish or Republish** your landing page

Test the field by entering:

* Valid phone numbers → should pass
* Incorrect or incomplete numbers → should be blocked

***

## Why Use Phone Validation

* Ensures **accurate phone number formats**
* Improves **lead quality**
* Reduces **fake or invalid submissions**

<Tip>
  💡 **Tip:** Always keep phone validation enabled when collecting leads for **call-based campaigns or SMS follow-ups**.
</Tip>