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Editorial Team

Asked: May 26, 20262026-05-26T20:15:05+00:00 2026-05-26T20:15:05+00:00

When trying to create an image for a native iPhone 4 app, what should

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When trying to create an image for a native iPhone 4 app, what should the image resolution be in Photoshop? how many pixels per inch? Does it matter?

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Editorial Team
2026-05-26T20:15:06+00:00Added an answer on May 26, 2026 at 8:15 pm
1) A 24″ 1920×1200 screen is roughly 20.4 inches wide; 1920 / 20.4 = 94 PPI. 2) An iPhone 3G has a screen 2.024 inches wide; 320 / 2.024 = 158 PPI. 3) An iPhone 4 has a screen 1.965 inches wide; 640 / 1.965 = 326 PPI.

Refer following link for more detail :

http://miekd.com/articles/dpi-ppi-and-photoshop-style-presets/

http://www.ethervision.net/development-processes/design-basics-iphone-ipad/

http://www.smashingmagazine.com/2010/11/17/designing-for-iphone-4-retina-display-techniques-and-workflow/
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