watchOS 4.3 (15T5199f) for Apple Watch Series 3 (42mm, LTE)

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watchOS 4.3 Release Notes

Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This beta version of watchOS 4.3 contains bug fixes and improvements.

For more information, visit:

https://developer.apple.com/go/?id=watchos-4.3-sdk-rn

This beta version of watchOS should only be deployed on devices dedicated for watchOS beta software development.