As a frequent traveler the emergency calling feature in so many countries without needing to sign up for another service is pretty dang cool. I was in an apartment in Eastern Europe sleeping when the kitchen caught on fire, luckily I woke up from the crackling of the walls/roof and no alarms went off. Luckily I had memorized the local emergency number and had a local sim (I don't always if I'm not in a place long enough) and was able to call the emergency services but it could have easily gone the wrong way. Sometimes seconds count and you don't want to be googling a local emergency number