Mobile phones mean we are never out of contact with our friends, parents, guardians, or if necessary our school. They provide a way we can quickly contact someone if we are in trouble or are lost. Mobiles are most clearly helpful if caught in a large scale disaster such as a flood or earthquake as we can tell rescuers where we are. But they are also helpful for every day security. With a mobile phone parents know where we are and can be quickly contacted if we feel unsafe somewhere.