The color temperature becomes lower when the phone is in Cycle reading mode because this feature dynamically adjusts the screen color temperature to enhance overall visual comfort throughout different times and usage scenarios during the day. If you wish to adjust the screen color temperature further or fix it at a specific value, you can switch to the classic reading mode and customize the color temperature as desired.
To adjust the Reading mode on your mobile phone, please refer to the following steps:
Go to [Settings] >> [Display & brightness] >> enable [Reading mode] >> [Classic].
To adjust the color temperature, you can refer to the following steps:
Go to [Settings] >> [Display & brightness] >> [Color scheme] >> select [Vivid] >> adjust the position of the dots in the Color temperature dial.