Lets face it. Responsive design is here to stay and it is the solution to all of our nightmares regarding mobile web design. For those who are not aware of this technique, I invite you to read my other post where I explain what it is. But lets get to the point. Sometimes we need to add conditionals to our WordPress theme in order to detect if the visitor is visiting us from a mobile device, if so, we remove or add content. This is solved by using a custom made function called is_mobile() embedded into our functions.php. Read on for more.