JS版

function smtel(telno){
    if((navigator.userAgent.indexOf('iPhone') > 0 && navigator.userAgent.indexOf('iPod') == -1) || navigator.userAgent.indexOf('Android') > 0 && navigator.userAgent.indexOf('Mobile') > 0 && navigator.userAgent.indexOf('SC-01C') == -1 && navigator.userAgent.indexOf('A1_07') == -1 ){
        document.write(''+telno+'');
        }else{
        document.write(''+telno+'');
    }
}

CSS

.tel-link {
    color: #06F;
    font-size: 16px;
    font-weight: bold;
}

html

お問い合わせ：

jQuery版

$(function(){
    var ua = navigator.userAgent;
    if(ua.indexOf('iPhone') > 0 && ua.indexOf('iPod') == -1 || ua.indexOf('Android') > 0 && ua.indexOf('Mobile') > 0 && ua.indexOf('SC-01C') == -1 && ua.indexOf('A1_07') == -1 ){
        $('.tel-link').each(function(){
            var str = $(this).text();
            $(this).html($('').attr('href', 'tel:' + str.replace(/-/g, '')).append(str + ''));
        });
    }
});

CSS

.tel-link {
    color: #06F;
    font-size: 16px;
    font-weight: bold;
}

html

お問い合わせ：00-0000-0000