how have cell phone changed society.

Along with the science change with each passing day, cell phone has made our society busier. For workers, their working time extend limitless because their boss or customer can call them anytime. For students, they have no place to hide by their parents and friends. Imagine a life lust answer the phone ever moment. Cell phone' invent and generalization destroy our freedom, you can fin anyone immediately if you want. Do you think it's good or bad for you?