Failed To Add Social Icon

Hi guys,

I want to add a Phone icon to the social icons and have tried adding ‘Phone’ => ‘phone’ (an array) in enfold/includes/admin/register-admin-options.php and added the following codes to functions.php:

add_filter(‘avf_default_icons’,’avia_add_custom_icon’, 10, 1);
function avia_add_custom_icon($icons)
{
$icons[‘phone’] = array( ‘font’ =>’entypo-fontello’, ‘icon’ => ‘ue854’);
return $icons;
}

add_filter(‘avf_social_icons_options’,’avia_add_custom_social_icon’, 10, 1);
function avia_add_custom_social_icon($icons)
{
$icons[‘Phone’] = ‘phone’;
return $icons;
}

However, the icon keeps appearing as the pencil icon instead of the phone icon.
What should I do?

Thanks & Regards,
Steve