Samsung reveals the Galaxy S4 (photos) Summary: Samsung steps up the heat in its continuing battle with Apple over patents, smartphones, and tablets. Take a look at its amazing accomplishment. By Andy Smith | March 15, 2013 -- 13:45 GMT (06:45 PDT) Previous | Next Image 3 of 21 (Image: Sarah Tew/CNET) The front of the Galaxy S4 features a metallic trim, while the back is just plastic. Topics: Smartphones, Samsung, Tablets Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.