How do you get a mobile phone number in Mexico in 2026?

Buy prepaid at the airport, a Telcel, AT&T or Movistar shop, or partner retailers such as OXXO when the offer is active. Staff register the SIM against your passport; anonymous SIMs are not a safe plan under current registration rules. Telcel still wins many movers for coverage depth outside major metros. eSIM options exist on some plans if your handset supports them. Top up in-app or at retail once the line is live.

Postpaid contracts usually want proof of a Mexican address and often a local bank relationship. Start prepaid if your INM card is still printing, then upgrade later: Apply for residence. Coverage is strong in CDMX cores; sierra and some coast pockets can feel thinner for data: Utilities, internet and transport and Living in Mexico City.

SAT appointment tools, bank apps and delivery couriers lean on Mexican numbers. Keep the SIM topped up through CURP and RFC weeks so codes do not bounce. Put the same number on your lease and bank forms: How to rent a home and Paperwork after moving.

Roaming on a home-country plan works for a holiday week and fails as a long-stay OTP strategy when banks reject foreign numbers.