What does lock screen cleaner option do?

I've asked for the post to be relocated to the Nokia 8 section, this seems to be a device-specific option.
 
Hmm, I don't see any "battery management" setting on my Nokia 8. Can you clarify?
 

Interesting, there are questions about this on other sites as well (Nokia forums, Reddit, etc) but no one seems to have an answer.

Have you tried reaching out to Nokia support?
 
In battery management settings, there's a toggle for it, what does it do exactly?
I have a axon 7 it has a lock screen cleaner on there in the power manager this is what they say...I imagine it's the same thing as on your phone

Screenshot_2018-01-14-18-44-54.jpg
 
I have a Background activity cleaner, I would assume this is the same thing just renamed in Oreo.
 

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