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What did people do before cellular phones became common? Undoubtedly, cellular phones have revolutionized the world. Cellular phones make communication easy and efficient. With the growing use of them, both in businesses and in homes, like it or not, this technology has become necessary. Without doubt, cellular phones offer many advantages such as added convenience, greater personal security, and increased communication in both businesses and the home. However, a cellular phone does have its share of disadvantages. For example, there are driving safety concerns, health concerns, and, of course, the social changes being shaped by a technology which is having a overwhelming effect on our interpersonal interaction. Cellular telephones are an excellent way to remain in touch and summon help, especially in the event of an emergency. An advantage of having a cell phone is the reliability and security it brings in knowing that you have one. In critical points in time, people with cell phones can more easily and faster reach help than those without cellular phones can. For example, victims of the World Trade Center collapse used cellular phones to call rescuers to tell them their locations. In at least one case, a cell phone allowed