In contrast, mobile phones have many disadvantages. The first one is they have effects to our health. Mobile phones have microwave radition, so they will be dangerous for our ears and brain. Besides, they also affect our children. Children may use mobile phones in wrong ways. This may cause them to leave school. Moreover, using mobile phones while driving is one of the main causes of road accidents. Finally, using mobile phones affects our society. Living together in a society, we must respect others. So, using mobile phones in public such as in classrooms, in cinemas, on buses is not good and proper. Although using mobile phones is disadvantagous, we can protect ourselves from the dangers of the mobile phones by using them properly.