And you can't lock the screen or unlock it while an activity is running, for no particularly good reason that I can see.
What's an 'Activity'? I just walked down the street with it recording and locked the screen while it was running, just as I would on the 800s (with a power button hold rather than power button push).
@Brommers started
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And you can't lock the screen or unlock it while an activity is running, for no particularly good reason that I can see.