Communication has changed because you used to only be able to call and you would have to talk to the phone operator to call the person that you wanted to call. The phone operator would be able to listen to everything you said to the person on the other end of the line. Then it slowly got better and the connection slowly started to get faster and it was better quality then it got even better and apple started to make the iPhone the first iPhone was the original then the iPhone 4 to the iPhone 5, 6, 7, 8, x and then XR