a tag tel code example
Example 1: html href tel
<a href="tel:+number">Link text</a>
Example 2: html telephone link
One click should open the phone dialler and input the number to be called.
<a href="tel:5551234567">Call (555)123-4567</a>
Example 3: href phone
<a href="tel:+5511981724236">98172-4236</a>