Overview
- AT&T begins enrollments January 7, with Telcel and Movistar starting January 9, and the general registration window runs through June 29 for existing lines.
- Unregistered numbers will be suspended starting June 30 and will only allow emergency and citizen‑service calls, while any plan or equipment payments remain due.
- The rules cover more than 158 million lines across prepaid and postpaid services, including physical SIMs and eSIMs, with immediate linkage required for new activations and a cap of 10 lines per person.
- Enrollment can be completed in person or remotely with CURP and an official ID, with remote validation including a selfie proof‑of‑life and limited attempts before an in‑person visit is required.
- Operators must provide two tools: a management platform to link or unlink numbers and a separate lookup that lets users, via CURP or RFC, see the last four digits of each linked line and the provider, with data held by carriers under privacy rules rather than a central government registry.