iOS 4.3 Software Update

This update contains new features and improvements, including the following:

• Personal Hotspot*

    - Share iPhone 4 cellular data connection with up to 5

          devices (combination of up to 3 Wi-Fi, 3 Bluetooth,

          and 1 USB)

• iTunes Home Sharing

    - Play music, movies and TV shows from a shared iTunes

          library on a Mac or PC (requires iTunes 10.2)

• New AirPlay features**

    - Play videos from the Photos app including the Camera

          Roll album, iTunes previews, enabled third-party apps

          and websites on Apple TV

    - Play slideshows from Photos on Apple TV using

          transitions available on Apple TV

• Faster Safari performance with Apple Nitro JavaScript

      engine

• HD video out using the Apple Digital AV Adapter***

    - View 720p HD videos from Videos app, iPod app,

          Photos, YouTube, Safari, Keynote, and enabled

          third-party apps on an HDMI display

• Ping features

    - Push notifications for comments and follow requests

    - Post and Like songs directly from the Now Playing

          screen

    - Parental controls

• New Settings

    - Messages setting for number of times to repeat an

          alert

    - iPad side switch setting to lock screen rotation or mute

          audio notifications and sound effects

• Single tap conference call dialing with a pause to send

      a passcode

• Bug fixes

Products compatible with this software update:

• iPhone 4 (GSM model)

• iPhone 3GS

• iPad

• iPod touch (4th generation)

• iPod touch (3rd generation)

*Requires iPhone 4 with tethering data plan

**Requires Apple TV (2nd generation) running software

      version 4.2 or later

***iPhone 4, iPad, iPod touch (4th generation)

For information on the security content of this update, please visit:

http://support.apple.com/kb/HT1222