Please, check my essay.

I think I should have my mobile phone whenever I leave the house. The reason is that I can talk with anyone with it no matter where I am. For example, even if there is a public telephone around, my mobile phone allows me to talk with anyone calling. Also, a mobile phone is used as other convenient items. It can be a game, navigation and so on. According to a use, I can choose the function of my mobile phone. For instance, if I have time I feel tired of, in train or cafeteria, I can play using an application of game of my mobile phone.