Hands free operation:
- Siri can read items from Notification Center.
- "Eyes Free", allowing car companies to build-in Siri integration
- New app that manages a user's boarding passes, movie tickets, retail coupons, loyalty cards, etc. in one app.
- Passes are updated in real time if changes are made (e.g. spending money on a store card, flight time, gate change, etc.).
- Passes are location and time-based, appearing on the lock screen when relevant.
- "Bluetooth" moved to top of Settings list.
- Added "Do Not Disturb" mode, allowing users to avoid calls and notifications unless calling parties are on the user's Favorites group.
- New Privacy Controls. Apps must now ask for permission to access the users photos, calendars, contacts and reminders.
- "Wi-Fi plus cellular" option added under "Cellular", to allow apps to use data over cellular if experiencing issues establishing connection through Wi-Fi.
- Adds phone icon on lock screen for additional ignoring options, similar to the camera sliding icon on the lock screen in iOS 5.1.
- When ignoring a call, the user can message the caller or set a Reminder to call them back later or send one of three customizable quick SMS response.
- VIP inbox stars important emails from user defined VIP group members.
- Flagged emails inbox.
- Attach photos and videos quickly with a long-press.
- Open password-protected Microsoft Office documents.
- Added Pull-to-Refresh gesture to update Mail accounts.
- Per account Signatures.
- Search All Fields.
- Custom Vibrations for Text Message Notifications
- Fullscreen landscape mode (for iPhone 3GS and newer; iPod Touch (4th generation) and newer).
- iCloud tab syncing across iOS devices and Macs.
- Offline reading list caches the user's reading list for later use, even when not connected to the Internet (not available for iPhone 3GS and iPod Touch (4th generation)).
- Support up to 25 open tabs on iPad.
- Removed as an integrated app due to an ended licensing deal with Google. Google created a stand-alone YouTube app for the App Store that was available for download on September 11, 2012.
- If iPhone is lost, Lost Mode triggers an attention grabbing sound, prompting the person who finds the iPhone to call a specific number set by the owner remotely.
- Global Network proxy for HTTP.
- IPv6 support for Wi-Fi and LTE.
- Kernel Address Space Layout Randomization added.
- Updating an app no longer requires the iTunes password to be entered.
- Install free apps without an Apple ID. (feature however appears to be removed since beta?)
Accessibility Guided Access:
- Allows user to lock exiting of the app in Single App Mode.
- Allows users to disable certain controls within a specific app.
- Locks the home button from being used to act like a kiosk.