Read eBooks Longer with True Tone
With the iPad mini 5, you can read ebooks and use your tablet longer without eye fatigue. The new iPad mini comes with a True Tone display that adapts to the light around you to make the display easier to read.
True Tone changes the white balance of the display as the light around you changes. This makes it easier on your eyes, allowing you to read ebooks longer, surf the web and use your new iPad without your eyes hurting as much as on older models.
This is on when you set up the iPad mini, but you may have turned it off accidentally. You can check by going to Settings -> Display & Brightness -> True Tone -> On.