ever since WatchOS 3 and the ability to disable screenshots, I've been getting various sounds randomly, like the Apple Pay chime and another one, despite nothing showing on the screen or there being any notifications. Cannot work out what or why.
Done that. It's on silent and it still makes the sounds.
Set the Watch up as new. Do not use restore. If that doesn't repair the issue, you likely will have to send it in to Apple.
I'll try that shortly.
I doubt it's a hardware issue, it has to be a software issue, as only happened since WatchOS 3.
I have been having this same thing happen at strange times. I am running the latest beta software. I have everyting on silent and just get alerts via vibration. Its really odd hearing noises coming from watch.