how to add telephone number in html

<a href="tel:1234657890">Call (123)456-7890</a>

<a href="tel:5554280940">Call us at 555-428-0940</a>

  <label for="phone">Enter your phone number:</label>
<input type="tel" 
  id="phone" name="phone" 
  pattern="[0-9]{3}-[0-9]{2}-[0-9]{3}"> 

Add this tag in your HTML file

<a href="tel:5554280940"></a>