Are Teenagers Addicted to their Phones?

In social studies, we were given the task to write a paragraph explaining our opinion on mobile devices, and whether we thought the majority of students are addicted to their phones or not. This is the final draft of the paragraph I wrote.

Although it is true that some students/teenagers are addicted to their phones, the same can not be said for all. It really depends on both the person using their phone and each individual's definition of 'addicted'. Unfortunately, for those who are addicted to their devices it can negatively effect their physical and mental health. Things such as eyesight and - if they frequently use headphones/earphones at a high volume - hearing can be permanently damaged. In spite of this, the benefits of using a mobile device outweigh the negatives, provided it is used responsibly.