Please correct my paragraph

One of the most important types of communication is cell phones for many reasons. First, cell phones make people close to each other. For example, if a student studies abroad, he will not lose contact because he can call anyone in his country. Second, cell phones keep the life easier. For instance, if someone is absent from class, and he wants to know the homework, he can call his friend to ask for it. Finally, cell phones relieve boredom. For example, if someone is waiting in a doctor's office after his appointment, he can play by his iphone while his friend comes. Clearly, cell phones make the life easier and more interesting.