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by jseutter 1565 days ago
I think they're talking about the accesibility filters: https://9to5mac.com/2016/03/18/how-to-reduce-iphone-screen-b...

I used to use it daily just before going to sleep, but then found the app I read with has a white text on black background that I prefer. Using both at the same time makes it too dark for my eyes, which is a good problem to have.