The 7.9mm Galaxy S 4 has a slightly thinner body and a larger 5-inch screen than the S3. The screen is also much crisper, with a 1080p, Super AMOLED panel. Internally, the phone has a quad-core processor and 2GB of RAM. It has built-in temperature and humidity sensors, and a removable battery.
The standout hardware feature is the 13-megapixel camera (the S 3 had an 8-megapixel camera).
The camera will take crisper and better low-light shots.
It has the Galaxy Camera interface to the phone. It is easier for people to know how the modes work with images.
It has dual shot and recording mode, which lets you combine photos and video from both the front-facing 2-megapixel camera and the rear camera into one shot or video.
Samsung’s new Air Wave feature you can actually wave your hand over the screen to cycle through the photos. The software, which uses a sensor on the front of the phone, also works in the Web browser; wave to the left to go backward in the browser and wave right to go forward. You can also wave across the screen to accept a call.
Using a sensor and the camera on the front of the phone, the phone recognizes that someone is looking at the screen with facial recognition software. Then you can tilt it to scroll up or down
* S Health app takes advantage of the accelerometer in the phone to track your steps and other fitness activity.
* S Translate app can translate voice to text
* Samsung’s remote app uses IR blaster in the phone to become a remote control for your TV