Apple Watch
my Apple Watch won't turn on but it's fully charged
Apple Watch Series 6, watchOS 7
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Best reply
If your Watch won’t charge or power on -
https://support.apple.com/en-us/HT204640
M1 Mac mini, macOS 11.3; Watch, series 5 GPS/cellular, watchOS 7.4; iPad Pro 2nd Gen, iPadOS 14.5; iPad Air 2, iPadOS 14.5; iPhone 12 Pro, iOS 14.5; TV 4th Gen, tvOS 14.5 HomePods, audioOS 14.5 and Airport Express w/ Airplay 2