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by bayindirh 1218 days ago
I use a Kobo eBook reader and an iPhone X.

My iPhone can go super dim, to the point that it's hard to see in a dark room. I use no special features.

Also, Kobo's eBook readers can go very very dim, and can be comfortably read in a zero light room. The max brightness I use is 29%-31%, dependent on lighting. My reader has a fixed light, but newer ones also adjust light temperature automagically, and much more comfortable to read (got one as a present for my dad).