It was better to have a brighter screen when reading novels on the phone during the day. This was because the higher the brightness of the phone screen, the higher the contrast felt by the eyes. In this case, it was easier for the eyes to adapt to the screen and enjoy the reading experience better. If the screen was too dark, it would cause the eyes to constantly adjust their vision to find the text, which would affect the reading experience. Therefore, when using the phone during the day, it is recommended to turn up the brightness of the screen to better enjoy the reading experience.