Auto brightness does have useful purposes, but a screen blasting bright, white light all day long will kill your phone battery faster than you can say, “Can I borrow your charger?” Apple says ...

So you grab your phone, unlock the screen…and screech in horror as the blazing light sears your eyes. Sometimes, even the lowest brightness setting is too dang vivid. Here’s how to change it.

So you pull out your phone ... “black screen” phenomenon occurs when you’re wearing them. (Don’t care about the science? Skip to the end of this article for the quick fix.) Light is ...