Apple iPhone 4 Announcement 2010: Steve Jobs Keynote (video)

The iPhone 4 Retina display uses technology called IPS (in-plane switching) — the same technology used in the Apple LED Cinema Display and iPad — to achieve a wider viewing angle than on typical LCDs. Which means you can hold iPhone 4 almost any way you want and still get a brilliant picture. That’s perfect when you’re sharing photos with a friend or moving your iPhone around while playing a driving or flying game. In addition, the Retina display offers four times the contrast ratio of previous models, so whites are brighter, blacks are darker, and everything is more beautiful.

"Why don't we approve the other 5 percent? No. 1 reason? App doesn't do what developer says it does. Second reason is use of private APIs. We're clear on this. Developers who do that know what they're doing, but they can't. Third reason we reject apps? They crash. If you were in our shoes, you'd reject those apps for the same reason. Just wanted to give you those facts."