I reset the settings (all settings) on my new iPhone 5 today, to try to troubleshoot some problem. Since doing so, my screen seems dimmer.
I never changed the brightness settings to begin with, from opening the factory-sealed box up until the reset, so I am not sure why this seems to be the case. The auto-brightness seems to be using a lower intensity for any given lighting condition since the reset.
Am I just imagining things, or is this possible?