The Samsung Galaxy S4 debuted in April 2013. The company first revealed the phone publicly at a publicity event in New York City in March 2013. The phone became Samsung’s fastest-selling smartphone at the time, selling 20 million units worldwide within two months of its release.
The Galaxy S4 focused on improved software and hardware integration, making use of new features such as better eye-tracking software and the capability to sense a finger hovering over the phone screen. Reviewers praised the device for its powerful processor, quality built-in camera, replaceable battery and wide range of software. Some reviews noted that the phone’s screen is dimmer than on competing devices and criticized its plastic casing as cheap looking.