We recently shared a number of things you can do with an old smartphone, but Redditor hepdd remind us that we left out one of the most obvious uses: any mobile phone, activated or not, can still make emergency calls.
Photo by Cord Woodruff.
Without a SIM card, your phone is no longer a means of being contacted, but it can still make emergency calls. So if you have an old phone that's sitting around doing nothing, you might as well stash it in your glove box. That way, if you get into an emergency situation and you've lost your phone or it has no battery, you can still make a 000 call if you need to.