testimonial carousal not working in mobile view

Question

i am working this sites testimonial section with a carousal slider.

The Fiddle

<script>
$(document).ready(function(){
$('.related_posts').bxSlider({
slideWidth: 350,
minSlides: 1,
maxSlides: 2,
slideMargin: 10
});
});  
</script>

html:

<ul class="related_posts wp_rp"><li><div class="message">

                We were able to go live with our product launch much before our estimated timeline and surprisingly without any bugs. We attribute this majorly to testbytes active involvement and efforts. Thanks Shaks. We’ll definitely recommend them to anyone.
            </div>

        <!-- CLIENT INFORMATION -->

        <div class="client">

            <div class="quote red-text">

                <i class="icon-fontawesome-webfont-294"></i>

            </div>

            <div class="client-info">

                <a class="client-name" target="_blank" href="http://www.flightspeak.net/">Leo Osahor</a>


                                    <div class="client-company">

                    Founder &amp; CEO
                </div>

            </div>


                      </div></li><li>
        <div class="message">

                testbytes knows its job very well. They helped me on few challenging projects and their attention to detail is remarkable. Another big asset is their flexibility that helped us meet our deadlines. testbytes follows stringent quality processes that ensures best quality software is delivered on time, highly professional team and I continue to come back to them always.
            </div><div class="client">

            <div class="quote red-text">

                <i class="icon-fontawesome-webfont-294"></i>

            </div>

            <div class="client-info">

                <a class="client-name" target="_blank" href="http://www.3rconnect.com">TajHaslani</a>


                                    <div class="client-company">

                    CEO
                </div>

            </div>

the slider works fine in desktop view .but when in try it in mobile it works in landscape mode but not in portrait.

landscape portrait

please help where it went wrong.