Before cell phones were popular, if you were driving and came across someone's car in the ditch, you would stop and check to see if they were okay, then you wait for someone else to do it. drive to get help and call 911, otherwise you will have to leave the person in the car to get help yourself. You can now call 911 on your cell phone while still being with the injured person and without having to leave them until the emergency response team arrives. If you are driving down the road in the middle of the night and get a flat tire with no one around, you can simply pull out your cell phone and call a friend/relative or towing company to come fix your tire. Back then, you had to wait for someone else to pass or try to walk to the nearest gas station to call for help. Before the advent of smartphones, if you were seriously injured and unconscious, no one except your loved ones knew your medical history. There is now an app on most cell phones that contains all your information, for example: your full name, address, age, blood type, health status, etc. Overall, I'm very happy to have my cell phone with me at all times. just in case of emergency. You never know when you will need to call someone for help. It's crazy to think how something, as small as cell phones, has significantly changed everything in the world..