After Apple launched iOS 6 in September 2012 to mostly positive reviews, the company underwent major personnel changes last October that would affect its direction in software. Scott Forstall, then Senior Vice President of iOS Software, was reportedly forced out of Apple after claims that he had caused an internal political divide about the use of skeuomorphism, among other things. As part of the reorganization, Apple announced that Jonathan Ive (pictured) would provide leadership of the Human Interface team in addition to his role as the head of Industrial Design, while OS X chief Craig Federighi would add iOS to his responsibilities.

Apple's iOS 7 mobile operating system started appearing in developers' logs leading up to the new year, with a next-generation iPhone also showing up in those logs. After the personnel shifts, speculation about iOS 7 included claims that Jony Ive was pushing for a flat design amid greater hardware and software design collaboration, and also that it would feature a complete design overhaul in general, removing the skeuomorphic elements found in iOS 6 and prior versions.

Apple unveiled iOS 7 during the WWDC keynote on June 10, 2013, touting a major design overhaul of almost every element of the software. The new design for the mobile operating system features an entirely new color scheme with translucency to "create a sense of depth and vitality," with new, flat icons and an overhauled user interface.

What's in iOS 7

Beyond the aesthetic redesign, iOS 7 also contains numerous tweaks and features that streamline user configuration. Multitasking has been vastly overhauled for iOS 7, offering a new cards look for apps that allows for easier quitting by swiping up out of a preview screen, while also intelligently scheduling updates for apps that pull data. Apple has also included a new universal settings window known as Control Center, which allows the user to swipe up from the bottom of the screen for quick access to preferences such as brightness controls and music buttons, as well as toggles for Do Not Disturb and Airplane Mode.

Notification Center has also been revamped in iOS 7, offering new daily overviews that let users know about new mail, missed calls, tasks, and other information. Notification Center can also now be accessed from any screen, including the Lock Screen, with a downward swipe, while also allowing for sync between devices. Also new in iOS 7 is support for AirDrop, a simple file sharing feature originally introduced with OS X Lion and which allows users to send photos, videos, contacts, and other content to other iOS users via Wi-Fi or Bluetooth. AirDrop capabilities are limited to the iPhone 5 and up, the fourth-generation iPad, the iPad mini, and the fifth-generation iPod touch.

Apple's services also have received new integration into iOS 7, including the brand new iTunes Radio, a streaming music service that adapts to user listening tendencies, as well as a brand new redesign for the App Store which includes a feature called "Apps Near Me", which shows a collection of popular apps relevant to a user's location, as well as automatic updating and a new kids category. Apple's iOS in the Car will also be making its way into iOS 7 in 2014, allowing for compatible car systems to interact with iOS through Siri as well as allowing for full navigation and response to phone calls and messages.

Other existing apps bundled with iOS have received updates and redesigns in iOS 7 as well. Voice assistant Siri has received a new look that fades into the top of a current screen, and Siri also connects with more services such as Bing and Wikipedia. The service has also received multiple new voices and can control certain settings such as Wi-Fi and music by voice.

Web browser Safari has received a unified smart search field within its address bar, as well as a new 3D tab view, expanded Reading List functionality, and a new iCloud Keychain feature with a built-in password generator that arrived as part of iOS 7.0.3 alongside the debut of OS X Mavericks.

Also, the Camera and Photos apps have been updated, with the former including modes for shooting in still, video, panorama, and square, as well as new filters with a new minimalistic interface, and the latter receiving a new sizable grid view with organizational "Collections", and refined integration with iCloud photo sharing. Find my iPhone has also been updated for iOS 7, requiring an Apple ID and password to reactivate, restore, or erase a device. The service can now also display a custom message for locked and stolen phones.

Apple has also introduced a number of new features specific to the iPhone 5s such as Touch ID fingerprint sensor and camera features like automatic image stabilization, Burst Mode, and Slo-Mo 120 fps video.

Other Things We've Found

In the lead up to the public release of iOS 7, we collected other interesting new features discovered during developer testing. They are cataloged in these articles: iOS 7 Beta Tidbits, iOS 7 Beta 2 Tidbits, iOS 7 Beta 3 Tidbits, iOS 7 Beta 4 Tidbits, and iOS 7 Beta 5 tidbits.

We've pulled out a few here:

Background App Refresh: Apps are able to refresh their content in the background in iOS 7, keeping them up-to-date at all times. This can be toggled on and off for individual apps by accessing Settings > General > Background App Refresh. Disabling Background App Refresh can potentially increase battery life, so it is best to limit this function to apps that are used often.

Siri: Siri requests seem to load much faster with the new iteration of iOS 7 and there are also male and female voice options available. These can be accessed in the General Settings under the Siri heading, which offers a new Voice Gender option. While male and female voices have been available in other languages, this is the first time English male/female voices can be activated

Boot Screen - When installing iOS 7 beta 5, many iPhone 5 users noted that the color of the boot screen matched their devices, with a white screen used for white phones and a black screen used for black phones. This differentiation appears to be limited to the iPhone 5 at this point in time as iPad owners and older iPhone users have not noticed the change.

Issues

Following the release of iOS 7, users have discovered a few issues with the new operating system, several of which have already been fixed by Apple and others that have yet to be addressed.

Some users have been complaining about motion sickness due to the parallax effect and zooming animations included in iOS 7. The parallax effect on the home screen where icons appear to hover over the wallpaper and move in a simulated 3-D manner when the device is tilted can be adjusted with a "Reduce Motion" in the Accessibility settings of iOS 7, but other issues such as zooming animations are not affected by this setting.

Several lock screen passcode vulnerabilities were discovered in iOS 7, allowing users to access photos and email on a device even when protected by a passcode. These issues were addressed with the release of iOS 7.0.2.

Users also experienced issues with iMessages in iOS 7, and while resetting network settings can help fix the problem, Apple has stated that it was working on a fix and deployed it as part of iOS 7.0.3 in late October. That release also addressed a number of other issues, including an accelerometer calibration problem on the iPhone 5s.

iOS 7.0.4 arrived in mid-November, bringing a fix for an issue with FaceTime calling. Some iOS devices in Europe and Asia received an iOS 7.0.5 update in late January, adding a fix for network provisioning in China.

Recently, Apple announced that a fix is in the works for a home screen crashing issue that has plagued iOS 7 since its release. The bug causes random system reboots, with the iPhone screen going black or white (depending on the color of the phone) for a short period of time before reloading.

iOS 7 was updated to version 7.1.2 on June 30, adding a few minor fixes and improvements that included repairing an email attachment encryption issue, adding improvements to iBeacon, and fixing a bug with data transfer for third-party accessories.

Prior to that, iOS 7.1.1, released on April 22, brought Touch ID enhancements and bug fixes. iOS 7's only major update thus far, iOS 7.1, initially came on March 10 and added several visual tweaks and new features to the operating system.

For example, the Phone, FaceTime, and Messages icon were tweaked to be a darker green that is less neon in appearance than the icons first shipped with iOS 7.

Apple also changed the keyboard contrast with revamped shift and caps locks keys along with bolder text. Control Center was also slightly tweaked with new animations, iOS gained a new shut down slider, and several changes were made to the Phone app.

In addition to a multitude of minor visual updates, iOS 7.1 also brought the support for CarPlay, improvements to Touch ID, Siri enhancements, and a new in-app purchase warning.

iOS 7.1 officially disabled the iOS 7 evasi0n jailbreak by patching multiple exploits, but the Pangu jailbreak for iOS 7.1.x became available in June.

Questions and answers in our iOS 7 forums