With iPhone 4 you can toggle between your favorite third-party apps without slowing down the performance of the foreground app or draining the battery
Two cameras, two views.
iPhone 4 has two cameras: one on the front, which focuses on you. And one on the back, which focuses on everything else. FaceTime lets you switch back and forth between them at any time during a video call. All you have to do is tap a button.
The Retina display on iPhone 4 is the sharpest, most vibrant, highest-resolution phone screen ever, with four times the pixel count of previous iPhone models. In fact, the pixel density is so high that the human eye is unable to distinguish individual pixels.
iPhone 4 introduces a whole new way of multitasking. Now you can run your favourite third-party apps — and switch between them instantly — without slowing down the performance of the foreground app or draining the battery unnecessarily.
HD Video Recording and Editing
Shoot your own movies in high definition. Capture impressive video even in low-light settings, thanks to the advanced backside illumination sensor and built-in LED light. Then edit and create your own mini-masterpiece right on iPhone 4 using the new iMovie app — with Apple-designed themes, titles and transitions.
5-Megapixel Camera with LED Flash
Take beautiful, detailed photos with the new 5-megapixel camera with built-in LED flash. The advanced backside illumination sensor captures great pictures even in low light.
Camera, photos and video
Mac system requirements
Windows system requirements