Open dataset · CC BY 4.0

iPhone 4 screen size

iPhone 4: 320 × 480 points at @2x, which is 640 × 960 pixels at 326 ppi on a 3.5-inch Retina display.

Screen specs

iPhone 4 screen specs
Points	320 × 480 pt
Pixels	640 × 960 px
Scale	@2x
PPI (Apple)	326
PPI (computed from pixels and diagonal)	329.7
Diagonal	3.5 inches
Aspect ratio	2:3 (1.5)
Display type	LCD
Display name	Retina
ProMotion	No
Always-On	No
Cutout	None
Home button	Yes
Model identifiers	iPhone3,1, iPhone3,2, iPhone3,3
Release year	2010

Safe area insets

Safe areas haven't been measured for this device yet.

For web developers

CSS viewport: 320 × 480 CSS pixels in portrait, devicePixelRatio 2. CSS pixels equal points.

/* iPhone 4, portrait */
@media (device-width: 320px) and (device-height: 480px) and (-webkit-device-pixel-ratio: 2) {
  /* styles for this screen size */
}

/* needs <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"> */
.page { padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
/* this device's insets aren't measured yet */

Safari's visible viewport is smaller than the screen because of the browser bars, so window.innerHeight is less than the height above until the bars collapse.

For iOS developers

A 1 pt line is 2 pixels thick.
A 44 pt tap target is 88 × 88 pixels.
Assets: @2x.
UIScreen.main.bounds: 320 × 480 points (portrait).
UIScreen.main.scale: 2.

Same layout size

Same points and scale (320 × 480 pt at @2x):

Compare

Previous iPhone model: iPhone 3GS
Next iPhone model: iPhone 4S

Sources

iPhone 4 - Tech Specs, Apple: diagonal, resolution, ppi, display_type, refresh_rate, features
Hardware strings (cross-check source), Wikipedia: model_identifiers

Download and cite

/api/devices/iphone-4.json: this device as JSON.
/api/devices.json: every device.
/api/devices.csv: every device as CSV.
github.com/aryansbtloe/apple-device-screen-specs: the dataset, JSON Schema and validator.

Data: Apple device screen specs by bestlatestapps.com (https://bestlatestapps.com/tools/apple-device-screen-sizes/), licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Built from Apple's published tech specs and Human Interface Guidelines, Wikipedia for model identifiers, and our own Xcode Simulator measurements.

Cite as: Singh, A. (2026). Apple Device Screen Specs (v0.1.0). Zenodo. https://doi.org/10.5281/zenodo.23819103

Also on: Zenodo and Kaggle

Link to this tool

Found it useful? You're welcome to link to it from your README, docs or blog.

HTML

<a href="https://bestlatestapps.com/tools/apple-device-screen-sizes/iphone-4/">iPhone 4 screen size</a> – iPhone 4: 3.5-inch LCD screen, 320×480 points at @2x, 640×960 px, 326 ppi.

Markdown

[iPhone 4 screen size](https://bestlatestapps.com/tools/apple-device-screen-sizes/iphone-4/) – iPhone 4: 3.5-inch LCD screen, 320×480 points at @2x, 640×960 px, 326 ppi.

Dataset credit (CC BY 4.0)

Data: [Apple device screen specs](https://bestlatestapps.com/tools/apple-device-screen-sizes/) by bestlatestapps.com, CC BY 4.0

Questions

What is the iPhone 4 viewport size in CSS pixels?

320 × 480 CSS pixels in portrait, with a devicePixelRatio of 2. Safari's visible viewport is smaller while the browser bars show.

What is the iPhone 4 screen resolution?

640 × 960 pixels at 326 ppi, shown as 320 × 480 points at @2x.

Does the iPhone 4 have the same screen size as the iPhone 4S?

Yes, for layout: both are 320 × 480 points at @2x, so apps and web pages lay out the same. Both have 640 × 960 pixels.

Data version 0.1.0, generated 2026-10-27.