Christian Zibreg, iDownloadBlog, on Apple Watch theater mode:
Activated via a brand new toggle in Control Center, Theater Mode puts your wearable device into silent mode while keeping the screen dark until you tap it or press the Digital Crown or the Side button.
Read the post for all the details, including some nice screen shots and a video that shows theater mode in action.
In a nutshell, you drag up on your Apple Watch screen to bring up control center. Tap the theater mode icon (orange, with two theater masks) to bring up a splash screen with a theater mode button. Tap the button and theater mode is enabled.
In theater mode, your watch screen will not light up in response to notifications or a wrist flick. You’ll need to tap the screen or press the Digital Crown or side button to turn it on.
Two things:
Not sure we need the splash screen button press to enable theater mode. Hopefully, this is a temporary extra step. I turn airplane mode on and off without the confirming splash screen. Works just fine.
Does the UK interface say “Theatre Mode”? Just curious.
UPDATE: And the answer is, Theater Mode in the US and Cinema Mode in the UK. [H/T Vincent Ritter]