text and swimming with Apple 5 Watch
Does a Apple 5 Watch with cellular service make calls and text while it is "waterproof/ locked"?
Apple Watch Series 5, watchOS 6
No, when it's locked it's locked.
ASC - Late 2012 Mac mini, macOS 10.15.5; Watch, series 5 GPS/cellular, watchOS 6.2; iPad Air 2, ipadOS 13.5.1; iPhone 8+, iOS 13.5.1; TV 4th Gen, tvOS 13.4.6; HomePods, audioOS 13.4.6 and Airport Express w/ Airplay 2