Samsung Galaxy S4 preview: a bigger, faster upgrade to the world’s most popular Android phone

Samsung’s Unpacked events are nothing if not spectacles, and tonight at Radio City Music Hall in New York City the company used the time to introduce its latest flagship smartphone, the Galaxy S4. The S4 succeeds the wildly popular Galaxy S III, and brings with it a litany of new features and tweaks — though at first glance, you might not even notice it’s different.