The Samsung S Guardian concept is similar to the brand’s Galaxy Note Edge but exhibits a couple of standout features that mean big enhancement. The first is a double-sided curved display with dual sidebars that come in handy for both righties and lefties. The second is portable external USB 3.0 memory for easy transfer of your work or other data between home and the office. The phone still operates with the external memory removed, so your calls, messages and emails are never