enlace telefónico html
<a href="tel:1234657890">Call (123)456-7890</a>
Matteoweb
<a href="tel:1234657890">Call (123)456-7890</a>
<a href="tel:0123456789">Click to call</a>
<!-- Adds country code with + -->
<a href="tel:+0123456789">Click to call</a>
<!-- Adds a 1 second pause (p) then dial 123 after phone number -->
<a href="tel:0123456789p123">Click to call</a>
<a href="tel:0612345678">Call me!</a>
<a href="tel:5554280940">Call us at 555-428-0940</a>
Add this tag in your HTML file
<a href="tel:5554280940"></a>