Why is the "Font settings" option in the phone settings grayed out?
If the "Font settings" option in [Display & brightness] is grayed out, please check if [Lite mode] is enabled. The font size cannot be adjusted in Lite mode. If [Lite mode] has been enabled, the [Lite mode is on] reminder will be displayed at the top of the settings interface. Please tap it to turn off [Lite mode].
Does it help?
Yes
No