What is iPhone 4 wallpaper size?

The comparison iPhone 4 vs iPhone 3GS display.

iPhone 4 official Display spec:

• Retina display
• 3.5-inch (diagonal) widescreen Multi-Touch display
• 960-by-640-pixel resolution at 326 ppi
• 800:1 contrast ratio (typical)
• Fingerprint-resistant oleophobic coating on front and back
• Support for display of multiple languages and characters simultaneously

 iPhone 3GS official Display spec

• 3.5-inch (diagonal) widescreen Multi-Touch display
• 480-by-320-pixel resolution at 163 ppi
• Fingerprint-resistant oleophobic coating
• Support for display of multiple languages and characters simultaneously

Even though iPhone 4 have the same screen size as iPhone 3GS (3.5-inch diagonal), but both iPhone have a different pixel resolution. iPhone 3GS have 480x320 pixel resolution and iPhone 4 have 960x640 pixel resolution. Therefore, the best wallpaper size if you like to create your own wallpaper for your iPhone 4 is 640x960 pixel resolution (horizontal). Click image to see the actual resolution of 960x640 (landscape) and 640x960 (portrait) wallpaper size.

Visit iPhone4Wallpapers.org for more 640x960 wallpaper size.