What is the display resolution of the iPhone 4's Retina display?

The iPhone 4’s Retina display has a resolution of 960 x 640 pixels.

When Apple introduced the iPhone 4 in 2010, this resolution was a major leap over earlier iPhone screens. Its 3.5-inch LCD packed 326 pixels per inch, making individual pixels difficult to distinguish at a typical viewing distance. Apple marketed the screen as a “Retina display,” arguing that it exceeded the resolving power of the human eye under normal phone-use conditions.

The display used an LED-backlit TFT LCD panel, not OLED technology. That distinction is a common source of confusion because later iPhone models adopted OLED screens while retaining the Retina branding. The 960 x 640 figure also describes the full pixel grid, with twice the horizontal and vertical resolution of the original iPhone’s 480 x 320 display.

Apple’s Retina claim was later debated by display experts, who noted that visual acuity varies and that viewing distance matters. Nevertheless, 960 x 640 is the standard specification for the original iPhone 4 display.