What is the correct iPhone 4 wallpaper size?

The Big Bang Theory

The Big Bang Theory

I got this e-mail from a friend!

How do I edit my own picture so it is formatted to the correct size to be used as a wallpaper  on my iPhone 4?

I wanted to tell him to use Google, but instead I decided to write this quick blog post. Let’s see first what Apple has to say about the iPhone 4 screen to get an overview:

  • Retina display
  • 3.5-inch (diagonal) widescreen Multi-Touch display
  • 960-by-640-pixel resolution at 326 ppi
  • 800:1 contrast ratio (typical)
  • 500 cd/m2 max brightness (typical)

The iPhone 4 and the iPhone 3Gs have completely different pixel resolution. The  iPhone 3GS has a resolution  of 480×320 pixel and iPhone 4 has a pixel resolution of 960×640.  The answer is to  use your favorite software  to crop your image to 640 X 960 and you should get a reasonable enough looking custom wallpaper!

If you are looking for a free editing tool give Gimp  (windows) a try. I edited the above promotion picture for the TV show The Big Bang Theory to the correct size as an example – for the iPhone 4. Try it on your iPhone and let me know what you think!

 

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2 Responses to What is the correct iPhone 4 wallpaper size?

  1. Google Search May 6, 2012 at 12:50 am #

    I realize this is from September 2011. But I came across this via a Google search. And want to post this here.

    Some people are interested in knowing the screen size in pixels. As opposed to inches, which seems to be the only information to be found. And even then if we knew the length and width, instead of the diagonal size that would be helpful.
    Some would rather size their picture to the actual size of the screen instead of trying to take advantage of the high resolution.

    I would not blame you for the exclusion of this information, since it seems as though I cant find it anywhere else either.

    • Confused dude May 20, 2013 at 4:20 am #

      Not sure if he edited his post, but all of that information is included in the above text.

      “Retina display
      3.5-inch (diagonal) widescreen Multi-Touch display
      960-by-640-pixel resolution at 326 ppi
      800:1 contrast ratio (typical)
      500 cd/m2 max brightness (typical)”

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