watchOS 4


watchOS 4 is an operating system that was designed, developed by Apple in 2017, and was preinstalled on the new Apple Watches and as an update through the iPhone for the previous series. The system has been released on September 19, 2017, and gets the last update (4.3.2) on July 9, 2018, and later has been replaced by a newer version of watchOS 5.

watchOS 4 features a proactive Siri watch face, personalized activity coaching, and an entirely new music experience. It also introduces GymKit, a technology platform to connect workouts with cardio equipment.

Today watchOS 4 is 4 years old!

watchOS 4
Source: midatlanticconsulting.com – watchOS 4

watchOS 4 General Information

ReleasedSeptember 19, 2017
Original PriceFree
System RequirementsApple Watch
Apple Watch Series 1
Apple Watch Series 2
Apple Watch Series 3
iPhone 5s or later
iOS 11 or later
DistributionTrough paired iPhone

Versions

VersionsBuildRelease Date
watchOS 4.015R372September 19, 2017
watchOS 4.115R846October 31, 2017
watchOS 4.215S102December 5, 2017
watchOS 4.2.215S542January 23, 2018
watchOS 4.2.315S600bFebruary 19, 2018
watchOS 4.315T212March 29, 2018
watchOS 4.3.115T567May 29, 2018
watchOS 4.3.215U70July 9, 2018

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