2. As well as being fun, mobile phones are extremely convenient. One no longer has to search desperately for a public telephone. People can easily be contacted on buses and when out shopping. Hanging around waiting for someone who is late is no longer so frustrating. Parents can keep in touch with their children, and the old can feel secure that a phone is always near at hand if they need help. If you have the right sort of phone, you can keep in touch with the world even from remote deserts.