When your smartphone battery starts to drop, every percentage point you have left counts. Good thing there’s a really easy--and sorta pretty--way to keep that dwindling battery alive just a little bit longer.
What you need: Your iPhone (although this trick actually works on Android devices, too).
What you do: Go into your smartphone’s settings and tap "General," then "Accessibility
OK, but how much time will I get? About 30 additional minutes. Just long enough to drive home and beeline for an outlet.