Apple iPhone 4: Everything you need to know

Summary:Apple on Monday released its highly anticipated next-generation smartphone, the iPhone 4. Here's everything you need to know.

Apple on Monday released its highly anticipated next-generation smartphone, the iPhone 4.

Here's everything you need to know:


  • Available in-store June 24.
  • Pre-orders start June 15 for the U.S., France, U.K., Germany and Japan.
  • 16GB model $199; 32GB model $299.
  • Available in black and white.
  • The iPhone 3GS now sells for $99.

What's new: outside

  • Yes, the prototype leaked by Gizmodo was the real deal.
  • What's out: the curved look with metal back. What's in: completely flat, with a thicker edge that's a band of stainless steel alloy (5X stronger than steel) that serves as the phone's antenna.
  • At 9.3 millimeters, it's 34 percent thinner than the iPhone 3GS and is currently the thinnest smartphone on the market.
  • "Retina Display": Four times the depth of 3GS. 3.5-inch multitouch IPS ("in-plane switching"), with 960?by?640 resolution. 320 pixels per inch. 800:1 contrast ratio. Oleophobic coating.
  • Front- and back-facing cameras. Back: 5-megapixel with LED flash, supports HD video. Front: VGA, up to 30fps.
  • It has split circular buttons for volume.
  • Second microphone for noise cancellation.
  • Micro-SIM standard.
  • Dimensions: 4.5 in. tall, 2.31 in. wide, 0.37 in. thick. Weight: 4.8 ounces. (a hair heavier than 3GS)

What's new: inside

  • Processor: Apple A4, the same chip used by the iPad.
  • Battery: 16 percent bigger than 3GS; rated for 40 percent more talk time. Ratings: 7 hours talk; 6 hours 3G browsing; 10 hours Wi-Fi browsing; 10 hours video; 40 hours music; 300 hours standby.
  • Three-axis gyroscope joins existing accelerometer and compass.
  • Connectivity: UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); 802.11b/g/n Wi-Fi (802.11n 2.4GHz only); Bluetooth 2.1 + EDR

What's new: software

  • iPhone OS becomes iOS; the new version is iOS 4.
  • Selective multitasking.
  • App folders for home screen.
  • FaceTime: videoconferencing over Wi-Fi only in 2010.
  • iMovie for iPhone, with up to 720p support.
  • iBooks: purchases load to iPhone, iPod, iPad (read: iOS devices) for no extra charge.
  • Photo and video geotagging.
  • Unified e-mail inbox.
  • Home screen wallpaper.

Watch Apple CEO Steve Jobs unveil the device:

Topics: Mobility, Apple, Hardware, iPhone, Smartphones


Andrew Nusca is a former writer-editor for ZDNet and contributor to CNET. He is also the former editor of SmartPlanet, ZDNet's sister site about innovation. He writes about business, technology and design now but used to cover finance, fashion and culture. He was an intern at Money, Men's Vogue, Popular Mechanics and the New York Daily Ne... Full Bio

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