Mostly everyone has a mobile device these days. Now of course there are some exceptions to that but we can safely say that many people do have access to own a mobile device and many uses it for personal and professional needs. Mobile devices can carry a lot of stuff. Users save music, images, books. All sorts of information that needs a lot of memory. This new generation of smart phones do not have a lot of capacity to save a lot stuff on it. The bigger the capacity of memory cards the better.