Accessible by everyone.

iOS 4 comes standard with a wide range of
accessibility features that help people with disabilities experience everything iPhone has to offer. For example, the built-in VoiceOver screen-reading technology allows those who are blind or have low vision to hear a description of the item they’re touching on the screen.
4 iOS 4 also offers out-of-the-box support for over 30 wireless braille displays and many other accessibility features, such as dynamic screen magnification, playback of closed-captioned video, white on black text, and more.
Ready for business.

Businesses around the world are choosing iPhone for its
enterprise-ready features and powerful security. iOS 4 works with Microsoft Exchange and standards-based servers to deliver over-the-air push email, calendar, and contacts. iOS 4 protects your data by encrypting information in three separate areas: in transmission, at rest on the device, and when backed up to iTunes. You can securely access private corporate networks through industry-standard VPN protocols. And companies can easily deploy iPhone across an enterprise using configuration profiles.
FaceTime + iOS 4

FaceTime is just another way iOS 4 seamlessly integrates hardware and software to make every iPhone feature as easy to use as it is groundbreaking. Now when you wish your friends could be there, they actually can be. With just a few taps, you can see your friends and family while you talk to them — iPhone 4 to iPhone 4 or new iPod touch over Wi-Fi.
Learn more about FaceTime
The world’s largest app platform.
With over 350,000 apps in practically every category, iOS 4 is the platform for the world’s largest collection of mobile apps. Apple gives third-party developers a rich set of tools and APIs, and they’ve been creating apps and games that redefine what a mobile device can do. Where to find these apps? Just browse the
App Store from your iPhone and download them with a tap.
Learn more about developing for iOS
Performance and stability that lead the industry.
iOS 4 is a desktop-class OS that’s been reinvented for mobile devices. Because it’s based on the world’s most advanced computer operating system — Mac OS X — performance in iOS 4 is fast and stability is rock-solid. iOS 4 manages power efficiently and delivers the best possible battery life. And
multitasking — using multiple apps at the same time — in iOS 4 doesn’t slow down the performance of the foreground app or drain the battery unnecessarily.
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Hardware and software made for each other.
Because Apple makes both the iPhone hardware and the operating system, everything works together seamlessly and intelligently. This integration enables apps to take full advantage of iPhone hardware features such as the
Retina display, the Multi-Touch interface, the accelerometer, the three-axis gyro, GPS, accelerated graphics, and more. FaceTime is a perfect example. It uses both iPhone 4 cameras, the display, one of the two microphones, and your Wi-Fi connection. If you’re on a voice call with someone and want to start a video call, FaceTime switches mics, turns on the front camera, and verifies your Wi-Fi connection — quickly and invisibly.
Safe and secure by design.
iOS 4 is highly secure from the moment you turn on your iPhone. All apps run in a safe environment, so a website or app can’t access data from other apps. iOS 4 supports encrypted network communication to protect your sensitive information. Optional parental controls let you manage iTunes purchases, Internet browsing, and access to explicit material. To guard your privacy, apps requesting location information must get your permission first. You can set a passcode lock to prevent unauthorized access to your phone and configure iPhone to delete all your data after too many unsuccessful passcode attempts. And in the event your iPhone is lost or stolen, Find My iPhone allows you to locate it on a map, lock its screen, and remotely delete all your data. If you get it back, you can restore everything from your last backup.
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