are cell phones dangerous?

Cell phones can be dangerous during the activies people do every day, if they get distracted while driving operating a machinery. Only at some certain jobs they prohibit you to use a cellphone. Even while walking someone can fall if someone is texting, when they are not paying attetion to their surroundings, or you can cause an accident to yourself or others. Since people depend on cellphones now to keep in contact with other people it is hard to remember a number since you just store it in a phone. Although they have technology to do everything now, its just easy to carry around .