Every people considers Apple as their first choice when they buy a smart phone. If they have not enough money, then they will choose another brand. Nokia was the leader of cellphone market, which seemed to be kicked out many years ago. But as more accidents happened in smart phone nowadays, people start to miss the old Nokia. It is known to all that the quality of Nokia is strong. it is said that even a car can’t destroy it. Indeed, I used to own a Nokia phone, it had the best quality of all my phones. It was out of date when the system needed to upgrade and the young people were in favor of more functions. So young people abandoned Nokia and some old people kept it. Now Nokia has been the memory in people’s mind, like an old and trustworthy friend.