New Cell Phone Rules Coming to Mexico in January 2026 On December 8, Mexico’s Comisión Reguladora de Telecomunicaciones (CRT) approved new rules that will change how mobile phone lines are registered in the country. Starting January 9, 2026, all Mexican mobile phone numbers, both prepaid and contract, must be linked to an individual or legal entity through official identification. While postpaid lines already require ID and some prepaid SIMs already ask for identification at the point of sale, the difference now is that registration becomes standardized, universal, and enforceable across all carriers. Under the new framework, anonymous “burner” phone lines will no longer be permitted. Every active mobile number must be associated with a CURP (for individuals) or an RFC (for companies and legal entities). This applies to everyone using a Mexican phone number, including Mexican nationals, foreign residents, businesses, prepaid SIM users, and eSIM holders. Anyone with an existing line not currently linked to a CURP or RFC will need to complete registration by presenting valid identification and the corresponding tax or identity number. Registration can be completed through provider platforms or at customer service centers, depending on the carrier. The registry formally takes effect on January 9, 2026, and users will have 120 working days to comply. Lines that are not registered within that period may be temporarily suspended, though emergency calls will remain available. Service will be restored once registration is completed. The rules limit registration to a maximum of 10 mobile lines per person.