I was just doing random stuff on my phone and went to click a button near the top right of the screen, and was mildly horrified to see "1%", so I immediately put it into the charger, where the phone promptly started showing "0%" for the next ~30 seconds. The phone never died.
Has this happened to any of you?
Any quality phone will / would "under promise and over deliver." What I mean is, you lie about being at zero charge when you really have one or two or three percent left to give the user time to get to a charger. This is better than turning off because it allows time for circumstances that don't allow the user to plug into a charger. Having a bit of breathing room means that one can call emergency services while on the way to plug in, for example, rather than being screwed because it's a ten minute walk home.