2.

According to the article, what are the "social costs" of cell phone usage? Support your answer with evidence from the text.

The social costs of cell phone usage are caused from the unhealthy addiction, interfering with ordinary activities in daily life as well as causing conflicts among family members or relationships in the society.

This is because people when uses phone for much time, they have the symptoms that an addict may have. They rely on phones to lift their moods. due to this dependence, when there is no phone in their sight, they may have anxiety or be in panic, which is the major cause for their bad attitude, temper influencing negatively their daily life and relationships.