In September, Telefónica Móviles will shutdown CDMA and TDMA networks, which were replaced by GSM in the country. The operator ensures that the proposed deadline to migrate their customers will be fulfilled smoothly. However, the blackout will not only entail telephone equipment, against the clock, security companies are still changing customers¿ handsets that they use to monitor vehicles and properties. Curiously, the company tells its customers that the decision of the technological change arose from an alleged regulation of the government, in reality nonexistent, it is to avoid claims when they are demanded to share replacement costs.