How-to make your iPhone Dimmer than Dim
When I'm trying to read my iPhone (or iPad) in bed, I'm liable to wake up my spouse with the device's backlight, even when the screen is set to its lowest brightness setting. Moreover, it's hard for me to fall asleep immediately after staring at a relatively bright screen.
Up until last night I thought I was just out of luck unless I installed flux, which would never be worth the security and stability issues raised by jailbreaking a device. Fortunately, Olivier Lacan commiserated and relayed a tip that iPhone's accessibility settings can be lightly abused to decrease the strength of the backlight below its lowest setting. (We've known the hardware is capable of this given that iBooks has always allowed you to.)
Because the Lifehacker guide Olivier linked was a bit hard-to-follow, I figured I'd help by illustrating a how-to do this with a few GIFs.