Practical

SIM Cards & eSIM in San Cristóbal de las Casas: Tourist Guide

For a short visit, the simplest documented mobile-data option is often an eSIM if your unlocked phone supports it. Telcel now offers a Tourist eSIM that can be registered with a valid passport, while AT&T offers prepaid eSIM packages through AT&T Go. Physical prepaid SIMs are still available, but Mexico’s 2026 line-registration rules mean activation now requires identity verification.

Published August 24, 2026

For most short-stay visitors, the easiest mobile-data setup is now an eSIM on an unlocked compatible phone. Mexico introduced mandatory identification for mobile lines in 2026, so buying a local prepaid line is no longer as anonymous or frictionless as older travel blogs may suggest.

Telcel now has an official Tourist eSIM specifically for visitors, and its current activation process accepts a valid passport. AT&T also sells prepaid eSIM packages through AT&T Go.

Quick answer

Simplest documented option for many international visitors: Telcel Tourist eSIM
Another prepaid eSIM option: AT&T Go
Physical SIM: still possible, but registration requirements apply
Important: your phone must be unlocked and compatible with the operator/eSIM
Remote work: do not assume mobile data is identical everywhere; test your exact accommodation and keep Wi-Fi as your primary connection when possible.

Last verified: August 24, 2026.

What changed in Mexico in 2026?

Mexico now requires mobile lines to be linked to an identified user. The Comisión Reguladora de Telecomunicaciones says prepaid lines must be registered, and unlinked lines can be suspended according to the current registration calendar.

For a traveler, the practical consequence is simple: ignore old advice that says you can always buy a Mexican prepaid SIM anonymously and start using it immediately.

Registration is handled by the mobile operator rather than by a single government database.

Best option for many visitors: Telcel Tourist eSIM

Telcel now sells an official eSIM Turista for people visiting Mexico.

The current Telcel process requires:

an unlocked eSIM-compatible phone;
internet/Wi-Fi for installation;
installation after arriving at the destination;
registration of the line before it can be used;
a valid photo ID, with Telcel explicitly documenting passport capture for its Tourist eSIM registration.

Telcel says the package validity starts when the eSIM is installed, so do not install it days before you actually need it unless the current offer specifically tells you to.

The exact packages and prices are commercial information that can change. Check Telcel’s current Tourist eSIM page before buying rather than relying on a screenshot or old blog post.

AT&T Go eSIM

AT&T currently offers AT&T Go, a prepaid eSIM product that can be activated without visiting a store on a compatible phone.

Current official AT&T listings show 30-day examples of:

6.5 GB — MXN 150;
10 GB — MXN 200;
20 GB — MXN 300.

AT&T states that AT&T Go is available to Mexican users, foreign residents, and visitors from the United States and Canada. If you are visiting from another country, confirm current eligibility before purchase rather than assuming the same onboarding applies to everyone.

Prices and included benefits can change.

What about a physical SIM?

Physical prepaid SIMs remain part of the Mexican market. Telcel, AT&T and Movistar all continue to publish prepaid offers.

But the 2026 identification rules mean the important question is no longer only “Where can I buy the chip?” It is also “Can I complete this operator’s registration process with the documents I have?”

If you prefer in-person help, Telcel’s April 2026 official Chiapas directory lists a San Cristóbal customer-service center at Plaza San Cristóbal, Diagonal Hermanos Paniagua 50, Barrio San Ramón. The same directory lists it as open daily, but opening hours are volatile, so check the current Telcel directory before making a special trip.

Telcel, AT&T or Movistar?

SanCrisGo does not publish a universal “best network” ranking for San Cristóbal because real performance depends on your exact building, neighborhood, device and the places you travel outside the city.

For a short international visit, Telcel currently has the clearest officially documented tourist-specific eSIM flow. AT&T Go is another simple eSIM option for eligible users. Movistar continues to offer prepaid service, but its current public tourist onboarding is less clearly documented than Telcel’s dedicated visitor product.

If your work depends on connectivity, test the actual connection rather than selecting only by headline data allowance.

Can you activate before arriving?

You can purchase some eSIM products before arrival, but follow the operator’s activation instructions carefully.

Telcel specifically recommends installing its Tourist eSIM when you reach your destination. You need Wi-Fi for installation, and the package starts when the eSIM is installed.

A useful setup is:

buy or prepare the eSIM before travel;
keep the QR/email accessible offline;
connect to airport or accommodation Wi-Fi after arrival;
install and complete registration;
set the new line as the active mobile-data line in your phone settings.

Do you need mobile data if your hotel has Wi-Fi?

Usually yes, at least as a backup.

Mobile data is useful for:

maps when walking around the city;
WhatsApp messages to accommodation or transport;
checking event locations;
translating menus or messages;
calling a taxi or contacting a driver;
backup connectivity if accommodation Wi-Fi fails.

For remote work, mobile data should normally be a backup, not a substitute for verifying the Wi-Fi at your actual accommodation.

See:

San Cristóbal Digital Nomad Guide

Other practical arrival basics

FAQ

Can tourists buy a Mexican SIM in 2026?

Yes, but local prepaid lines are now subject to identity-registration rules. The exact onboarding depends on the operator and product. Telcel’s Tourist eSIM explicitly supports registration with a valid passport.

Can I use a foreign phone?

Yes if it is unlocked and technically compatible with the chosen network/eSIM. Check compatibility before paying.

Is eSIM easier than a physical SIM?

For many short-stay visitors with compatible phones, yes. It avoids finding a shop and physically changing SIM cards, but registration still applies to Mexican carrier eSIMs.

Should I install the Telcel Tourist eSIM before flying?

Telcel currently recommends installing it when you arrive at the destination. Its package validity begins when the eSIM is installed.

Where can I get in-person Telcel help in San Cristóbal?

Telcel’s current 2026 Chiapas customer-service directory lists a San Cristóbal center at Plaza San Cristóbal on Diagonal Hermanos Paniagua in Barrio San Ramón. Recheck current hours before visiting.

Sources

Last verified: August 24, 2026.