Retina High Resolution Screen on iPhone 4

The clearest, highest resolution mobile screen ever, the Retina display makes everything you do and see on the iPhone 4 brilliantly crisp and sharp. It's all due to the Retina display having a pixel density that's so high your eyes cannot distinguish the different pixels. Apple engineers have succeeded in making pixels just 78 micrometres in width, and have crammed four times as many into a standard 3.5-inch screen than previous iPhone models possessed.

The 326-pixel per inch density that iPhone 4 has as a result makes graphic and text appear continuous and smooth no matter what the size. In addition, the in-plane switching (IPS) technology that the Retina display utilises means iPhone 4 has a brilliant picture virtually any way you hold it. The Retina display's glass is strengthened with chemicals so it's more scratch resistant and harder than ever, and its oil-resistant veneer helps to keep it clean.