The iPhone 5S has an identical screen, and its camera is also 8 megapixels. But each pixel is larger. That means it's better at capturing light, which should translate into better photos indoors and other low-light settings. The new camera also has a dual flash, which Apple calls True Tone. The flash fires two bursts of lights at once, each slightly different in color. The iPhone will adjust the combination of the two automatically to bring out more natural skin tones and other colors in images.
The 5S also has a faster, 64-bit processor, which lets it handle more data simultaneously compared with traditional 32-bit systems.
