Mexican telephone users have until June 30, 2026 [3], to link their mobile phone lines with the Clave Única de Registro de Población (CURP).

This mandatory registration is a federal requirement that ties personal identity to telecommunications. Failure to comply could result in the suspension of cellular service and the blocking of certain applications for unregistered lines.

The registration process began on Jan. 9, 2024 [4]. Despite the extended timeframe, only 35% [1] of the country's 158 million [2] mobile lines have been registered so far.

Many users remain distrustful of the process. Concerns center on the potential misuse of personal data, and the risk of losing their phone lines. Some users have reported that lines were linked to their CURP without their consent, leading to the pursuit of legal protections through amparos.

The government said the measure is necessary for federal regulation. However, the low adoption rate suggests a significant gap between regulatory goals and public trust in data handling practices.

Users of major carriers, such as Telcel, must follow specific registration steps to ensure their lines remain active. As the deadline approaches, the risk of widespread service disruptions increases for the millions of users who have not yet completed the process.

Only 35% of mobile lines have been registered

The low registration rate highlights a tension between state security efforts to monitor telecommunications and public anxiety over digital privacy. If the government enforces the June 30 deadline strictly, millions of citizens could lose connectivity, potentially creating a significant socio-economic disruption and a legal battle over data consent.