IOS 9

iOS 9 is the ninth major release of the iOS mobile operating system developed by Apple Inc., serving as the successor to iOS 8 and predecessor to iOS 10. It was announced on June 8th at the 2015 Worldwide Developers Conference, alongside tvOS 9, watchOS 2 and OS X El Capitan. Released on September 16, 2015, iOS 9 focuses less on new features and more on under-the-hood optimizations, as well as battery improvements. iOS 9 requires over 1 GB of free space to be downloaded onto supported iPhone or iPad models.
==History==
The first beta release of iOS 9.0 became available to registered developers right after the keynote event of the 2015 Worldwide Developers Conference on June 8, 2015. A public beta became available to members of Apple's Beta Software Program in July.
Currently the latest versions are iOS 9.3.5 for Wi-Fi only models, and 9.3.6 for cellular models to fix GPS issues.Apple security updates (2016 to 2017), Apple Support. 2022-03-14.Apple security updates (2018 to 2019), Apple Support. 2022-03-14.Apple Releases iOS 9.3.6 and iOS 10.3.4 With GPS Bug Fix for Older iPhones and iPads by Juli Clover, MacRumors. 2019-07-22.
===Release history===
Version	Build 	Release date 	Notes
9.0 	13A34013A34213A34313A344	September 16, 2015	
*Initial release on iPhone 6S, 6S Plus and iPad mini 4.
9.0.1 	13A404 	September 23, 2015	
*Fixes an issue where some users could not complete setup assistant after updating
*Fixes an issue where sometimes alarms and timers could fail to play
*Fixes an issue in Safari and Photos apps where pausing video could cause the paused frame to appear distorted
*Fixes an issue where some users with a custom APN setup via a profile would lose cellular data
9.0.1 	13A405 	September 24, 2015	
*Fixes an issue where some users could not complete setup assistant after updating
*Fixes an issue where sometimes alarms and timers could fail to play
*Fixes an issue in Safari and Photos apps where pausing video could cause the paused frame to appear distorted
*Fixes an issue where some users with a custom APN setup via a profile would lose cellular data
9.0.2 	13A452 	September 30, 2015	
*Fixes an issue with the setting to turn on or off app cellular data usage
*Fixes an issue that prevented iMessage activation for some users
*Fixes an issue where an iCloud backup could be interrupted after starting a manual backup
*Fixes an issue where the screen could incorrectly rotate when receiving notifications
*Fixes an issue where a lock screen issue allowed access to photos and contacts on a locked device
*Improved the stability of Podcasts app
9.1 	13B143 	October 21, 2015 	
*Initial release on iPad Pro 12.9-inch (1st generation)
*Live Photos now intelligently senses when the iPhone is raised or lowered, so that Live Photos will automatically not record these movements p
*Over 150 new emoji characters with full support for Unicode 7.0 and 8.0 emojis
*Improved overall stability, including CarPlay, Music, Photos, Safari and Search
*Improved performance while in Multitasking UI
*Fixes an issue that could cause Calendar to become unresponsive in Month view
*Fixes an issue that prevented Game Center from launching some users
*Fixes an issue that zoomed the content of some apps
*Fixes an issue that could cause an incorrect unread mail count for POP mail accounts
*Fixes an issue that prevented users from removing recent contacts from new mail or messages
*Fixes an issue that caused some messages to not appear in Mail search results
*Fixes an issue that left a gray bar in the body of an audio message
*Fixes an issue that caused activation errors on some carriers
*Fixes an issue that prevented some apps from updating from the App Store
9.1 	13B144 	November 17, 2015 	
*Initial release on iPad Pro 12.9-inch (1st generation)
*Live Photos now intelligently senses when the iPhone is raised or lowered, so that Live Photos will automatically not record these movements p
*Over 150 new emoji characters with full support for Unicode 7.0 and 8.0 emojis
*Improved overall stability, including CarPlay, Music, Photos, Safari and Search
*Improved performance while in Multitasking UI
*Fixes an issue that could cause Calendar to become unresponsive in Month view
*Fixes an issue that prevented Game Center from launching some users
*Fixes an issue that zoomed the content of some apps
*Fixes an issue that could cause an incorrect unread mail count for POP mail accounts
*Fixes an issue that prevented users from removing recent contacts from new mail or messages
*Fixes an issue that caused some messages to not appear in Mail search results
*Fixes an issue that left a gray bar in the body of an audio message
*Fixes an issue that caused activation errors on some carriers
*Fixes an issue that prevented some apps from updating from the App Store
9.2 	13C75 	December 8, 2015 	
*Apple Music improvements
**Ability to create a new playlist when adding a song to a playlist
**Most recently changed playlist is now listed at the top when adding songs to playlist
**Ability to download albums or playlists from your iCloud Music Library by tapping the iCloud download button
**New download indicator next to each song in My Music and Playlists
**See works, composers, and performers while browsing Classical music in the Apple Music catalog
*iBooks now supports listening to an audiobook while browsing the library, reading other books, or exploring the iBooks Store
*iPhone support for USB Camera Adapter to import photos ans videos
*Siri support for Arabic (Saudi Arabia, United Arab Emirates)
*Bug fixes
9.2.1 	13D15 	January 19, 2016 	
*General bug fixes and security patches
9.2.1 	13D20 	February 18, 2016 	
*General bug fixes and security patches
9.3 	13E23313E234 	March 21, 2016 	
*Initial release on iPhone SE (1st generation) and iPad Pro 9.7-inch
*Adds support for a new feature named Night Shift which, manually or automatically (based on user preference), makes the display color warmer so it is easier to view at night. Users can adjust the color temperature in the Settings app
**Night Shift works only on 64-bit devices
*Adds support for protecting notes inside the Notes app with a passcode or Touch ID
*Support for pairing multiple Apple Watches to your iPhone
*Support for Spanish (Latin America) display language
*Siri support for Finnish, Hebrew and Malay
*Fixes an issue where manually changing the date to May 1970 or earlier could prevent 64-bit and 32-bit devices from turning on after a restart
9.3 	13E236 	March 25, 2016 	
*Builds 13E236 and 13E237 were issued to devices that were affected by the Activation Lock bug. These re-issued builds helped correct the issue after the prior builds were withdrawn
9.3 	13E237 	March 28, 2016 	
*Builds 13E236 and 13E237 were issued to devices that were affected by the Activation Lock bug. These re-issued builds helped correct the issue after the prior builds were withdrawn
9.3.1 	13E238 	March 31, 2016 	
*Fixes an issue that caused apps to be unresponsive after tapping on links in Safari or other apps
*Fixes an issue where connecting to a fake Apple time server which sets system time to January 1, 1970 can cause 64-bit devices to overheat and become unresponsive after a restart
9.3.2 	13F69 	May 16, 2016 	
*Fixes an issue where some Bluetooth accessories could experience audio quality issues when paired to iPhone SE
*Fixes an issue where looking up dictionary definitions could fail
*Fixes an issue that prevented typing email addresses when using the Japanese Kana keyboard in Mail and Messages
*Fixes an issue for VoiceOver users, using the Alex voice, where the device switches to a different voice to announce punctuation or spaces
9.3.2 	13F72 	June 2, 2016 	
*A previous build of iOS 9.3.2 "bricked" some iPad Pros 9.7-inch. Build 13F72 fixes this issue
9.3.3 	13G34 	July 18, 2016 	
*General bug fixes and improvements
9.3.4 	13G35 	August 4, 2016 	
*Fixes a memory corruption vulnerability found by Team Pangu that allows arbitrary code execution with kernel privileges
9.3.5 	13G36 	August 25, 2016 	
*Fixes security vulnerabilities
9.3.6 	13G37 	July 22, 2019 	
*Fixes an issue that would prevent cellular devices from maintaining an accurate GPS position after November 3, 2019
====Release notes====
==Supported devices==
===iPhone===
*iPhone 4S
*iPhone 5
*iPhone 5C
*iPhone 5S
*iPhone 6
*iPhone 6 Plus
*iPhone 6S
*iPhone 6S Plus
===iPad===
*iPad 2
*iPad (3rd generation)
*iPad (4th generation)
*iPad Air
*iPad Air 2
*iPad Pro (1st generation)
===iPad Mini===
*iPad mini
*IPad mini 2
*iPad mini 3
*iPad mini 4
===iPod===
*iPod touch (5th generation)
*iPod touch (6th generation)
==Trivia==
*This is the last version of iOS to feature Slide To Unlock.
*This is the last version of iOS to support devices that charge with 30-pin dock connectors.
*This is the first version of iOS to use a new flat Music icon (the previous icon was originally going to be used).
*This is the first version of iOS to feature a new flat switcher.
*This is the first version of iOS to feature News, replacing Newsstand.
==References==
==External links==
*iOS 9 at Apple (archived 2015-09-17)
**iOS 9 Preview (archived 2015-06-08)
* at Wikipedia
Category:Discontinued Apple software
Category:2015 introductions
pl:IOS 9