WatchOS 4

watchOS 4 is the fourth major release of watchOS for the Apple Watch series developed and distributed by Apple Inc. It was announced at the 2017 Worldwide Developers Conference alongside iOS 11, tvOS 11 and macOS High Sierra.
==Product history==
watchOS 4 is derived from iOS 11; both were announced on June 5, 2017 during the keynote address at WWDC 2017, when it became available to developers. It was released to the public on September 19, 2017.
===Supported models===
* Original Apple Watch, also known as Series "zero" (limited support)
* Apple Watch Series 1
* Apple Watch Series 2
* Apple Watch Series 3 (included with initial release)
===Release history===
	Obsolete / unsupported  		Discontinued  		Current  		Beta  
watchOS 4.x releases	watchOS 4.x releases 	watchOS 4.x releases	watchOS 4.x releases	watchOS 4.x releases
watchOSversion 	iOS versionbased on	Build 	Release date 	Features
4.0 	
11.0 	
15R372 	 	
Initial Release on Apple Watch Series 3 (Dual-Core).
Dropped support for iPhone 5 and iPhone 5C.
New Watch faces
* Siri face with updates based on time, location, and daily routines
* Toy Story face with animated Toy Story characters
* Kaleidoscope face with static images turning into patterns
* Siri, News, Heart Rate, Now Playing, Messages Complications
Activity
* Personalized notifications
* Monthly challenges
* Full Screen animations for achievements and rings closed
* Workout metrics included in replies for Activity Sharing notifications
Workout
* App completely redesigned
* High Intensity Interval Training workout support
* Multiple workouts in a single session support
* Auto sets for Pool Swim workouts
* Synced music playlist support when starting workouts (Apple Watch 1st gen not supported)
* Music controls right inside the app
* Do Not Disturb can be automatically turned on when starting workouts
Heart Rate
* Graphs for all-day heart rate
* New measurements including resting rate, walking average, workout average, workout high, recovery, and Breathe sessions
* High Heart Rate notifications support (Apple Watch 1st gen not supported)
* New Heart Rate data on iPhone including Heart Rate Variability and VO2 max
Music
* App completely redesigned
* Multiple playlists sync support for local playback with Bluetooth headphones
* Apple Music curated playlists sync support, includes Heavy Rotation, My New Music Mix, and My Favorites Mix
Miscellaneous
* News app added
* Flashlight and Safety Light can be toggled through Control Center
* Recent used apps in Dock
* App home screen in alphabetical view
* Gestures support in Mail
* Dialer pad right inside Phone app
* Conflicts for Calendar invites can now be displayed
* New language for Scribble: German
* New timers: sub-minute and repeating
* Recent locations and suggestions in Maps
* Contacts in Smart Reply, includes location
4.0.1 	
11.0 	
15R654 	 	
Apple Watch Series 3 (GPS + Cellular) only
* Resolved: Apple Watches joining unauthenticated Wi-Fi networks
4.1 	
11.1 	
15R846 	 	
* Music streaming support on Apple Music or iCloud Music Library (Apple Watch Series 3 only)
* New Radio app: Beats 1 Live Radio, custom stations, and expert-curated stations (Apple Watch Series 3 only)
* Find, discover, and play songs, albums, or albums using Siri
* Fitness data syncing support for more accurate metrics on GymKit-enabled treadmills, ellipticals, stair steppers, and indoor bikes
* Ability to disconnect from a Wi-Fi network right in Control Center (Apple Watch Series 3 GPS + Cellular model only)
* Resolved: Heart Rate notifications erroneously delivered to users who have not enabled the feature
* Resolved: Current Stand Hour indicator not correctly displayed
* Resolved: Haptics not delivered for silent alarms
* Resolved: Apple Watch (1st gen) not charging
* Resolved: Sunrise / Sunset complication not appearing on watch faces
* Mandarin Chinese now set as default dictation language in China
4.2 	
11.2 	
15S102 	 	
* Apple Pay Cash support (US only)
* HomeKit sprinklers and faucet support
* 3rd-party app Workouts: distance, average Speed, number of runs, elevation descended for downhill snow sports (Apple Watch Series 3 only)
* Resolved: Crash when asking Siri about weather
* Resolved: Scrolling disabled in the Heart Rate app
* Resolved: Simultaneous timers and alarms not being independently dismissed
4.2.2 	
11.2 	
15S542 	 	
* This update includes improvements and bug fixes.
4.2.3 	
11.2 	
15S600b 	 	
* Fixes an issue where using certain character sequences could cause apps to crash.
4.3 	
11.3 	
15T212 	 	
* HomePod volume and playback control support
* Regaining control of music on iPhone
* Multiple orientation support on Nightstand mode
* Activity rings progress and new songs to Apple Music mixes are now shown on the Siri watch face
* Resolved: Activity achievements incorrectly awarded
* Resolved: Siri music commands not working for some audio
4.3.1 	
11.4 	
15T567 	 	
* Fixes an issue which caused Apple Watch to sometimes remain at the Apple Logo during startup for some users.
4.3.2 	
11.4.1 	
15U70 	 	
Final release supported on the original Apple Watch.
* This update includes improvements and bug fixes.
==References==
==External links==
*watchOS (4) at Apple (archived 2017-09-27)
*Firmware/Apple Watch/4.x at the iPhone Wiki
* at Wikipedia
Category:2017 introductions
Category:Discontinued Apple software