Apple released watchOS 4.0.1 on Wednesday with a fix for a problem where some Apple Watch Series 3 models with cellular connectivity support were connecting to unauthenticated public Wi-Fi networks.

The update addresses what could be a security issue because not all public Wi-Fi networks can be trusted. Someone networks could, for example, be traps trying to siphon personal information from your watch or computer.
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To install watchOS 4.0.1, launch the Watch app on your iPhone, then go to My Watch > General > Software Update. If the update is available for your Apple Watch it’ll appear there.
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