By building pixels a mere 78 micrometers wide, Apple engineers were in a position to pack four times the quantity of pixels into the same three.5-inch (diagonal) screen found on earlier iPhone versions. The resulting pixel density of iPhone 4 326 pixels per inch makes text and graphics look smooth and continuous at any dimension.
Brilliant, no matter how you look at it. The iPhone 4 Retina display uses technology known as IPS (in-plane switching) the exact same technology used within the Apple LED Cinema Show and iPad to achieve a wider viewing angle than on standard LCDs. Which means you can hold iPhone 4 almost any way you would like and nevertheless get a brilliant picture. Thats ideal when youre sharing pictures with a friend or moving your iPhone close to although playing a driving or flying game. Additionally, the Retina show offers four times the contrast ratio of previous models, so whites are brighter, blacks are darker, and every thing is much more stunning.
Created through the exact same materials used in helicopters and high-speed trains, the Retina display glass is chemically strengthened to become harder, more scratch resistant, and more durable than ever. The glass also functions an oil-resistant coating that assists keep the screen clean.
The Retina show consists of LED backlighting and an ambient light sensor that intelligently adjusts the brightness with the screen for optimal viewing and battery existence. When you lift iPhone to your ear for a telephone call, a proximity sensor immediately turns off the display to conserve energy and avoid accidental dialing.
