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Friends what should do in this code for it redirects the number to the Whatssap on iphone, when clicked by safari it is invalid but on android works properly.
<li><a class='icon-fa-instagram' href="intent://send/+551799999999#Intent;scheme=smsto;package=com.whatsapp;action=android.intent.action.SENDTO;end"><i style='font-size:60px;color:red;' />Whatssap Televendas</a>