I think that calling's advantage is raising vividness because of voice.
> I think that the advantage of calling is that it is more vivid because you can hear the other person's voice.
Old people is used to calling.
> Old people are used to calling.
Texting's advantage is used to type emoticon.
> Texting's advantage is that you can use emoticons.
Like, ^^,¤Ð¤Ð,¤¾¤¾(it means 'ha ha') and ?¾?½.
> Correct!
It is fun to type many kinds of emoticon.
> It is fun to type/use many kinds of emoticons.
Youngsters is used to texting.
> Youngsters are used to texting.