Methods of communication differ

The differ of communication between me and my parents is so clear. Generally they use phone for something beneficial or contact someone. Because they seem like smart phone must be useful, if does not why we use it? But in our perspective things are changing a little. Of course we use phone for useful things too, but most of the time we use it for enjoy or have a good time. The differ of phone usage can change by age. Usually I communicate with message but my parents prefer cal. So it is a example of differ too.