You don't need to carry a phone with you everywhere you go all the time and keep it in your pocket. Hell, a lot of phones don't even fit in pockets anymore. You can keep it on your desk or in your bag. You can even do something crazy like leave it at home or in your car and go to the beach. You probably won't die. And because you live in a world with other people in it, it's possible that if you do set your phone down for a little bit and you have a medical emergency someone else could call for you.
You don't need to carry a phone with you everywhere you go all the time and keep it in your pocket. Hell, a lot of phones don't even fit in pockets anymore. You can keep it on your desk or in your bag. You can even do something crazy like leave it at home or in your car and go to the beach. You probably won't die. And because you live in a world with other people in it, it's possible that if you do set your phone down for a little bit and you have a medical emergency someone else could call for you.