Outstanding achievement of todays technology. Nowadays, mobile phones became one of the principal means of communication between people. Phones have been upgraded so the last few years that have become an inseparable partner of todays youth. With mobile phones, we can stay in touch with people even set out on the other end of the world. Of course, an essential condition for operation of mobile telephony is that the two parties wishing to connect with each other must be in the range sets. In addition, todays phones are the real miracles of technology. With their help, you can perform many activities that have been assigned to other devices. For example, on todays computers can play each other carelessly, which used to be reserved only for stationary or portable computers. Another achievement could be listening to music, which used to be the task of the radio, not to mention the possibility of taking pictures and shooting long or short films.