Does Mexico require ID to buy a SIM card in 2026?

Yes. Mexico's 2026 telecom rules require identity verification when activating a local SIM, including CURP-linked or biometric checks for Mexican customers and passport registration for foreigners. A travel eSIM from nadanada requires no ID, no account and no registration at all.

Does an eSIM work in Cancun, Tulum and the Riviera Maya?

Yes. The Cancun–Playa del Carmen–Tulum corridor has strong 4G/5G coverage, as do Mexico City, Guadalajara, Monterrey, Puerto Vallarta, Los Cabos and Oaxaca's coast. Remote jungle ruins, some cenotes and sparsely populated stretches of Baja and Chiapas can have weak or no signal.

How much data do I need for 2 weeks in Mexico?

For typical use, meaning maps, WhatsApp (Mexico's default messaging app), ride-hailing and social media, 8 to 12GB covers two weeks. Beach resorts have decent Wi-Fi for evenings, so daytime use is the main draw. Heavy streamers and remote workers should plan 20GB or top up mid-trip.

Is it cheaper to buy a SIM at a Mexico airport or an eSIM?

Airport SIMs in Mexico cost significantly more than the same carriers charge in town, and from 2026 they come with a registration process on top. A travel eSIM is comparably priced to in-town SIMs, installs before you fly, and skips registration entirely.

Does WhatsApp work in Mexico with a travel eSIM?

Yes, with no restrictions, since Mexico has no internet filtering of mainstream apps. WhatsApp is the primary way to communicate with hotels, tour operators and drivers in Mexico, and it works normally on travel eSIM data.

Can I keep my home number active while using a Mexico eSIM?

Yes. On a dual-SIM phone your home SIM stays active for calls and texts (watch roaming rates) while the Mexico eSIM handles all mobile data. You can top up the eSIM anytime without reinstalling it.

Mexico eSIM Guide 2026: Data, Coverage and the New SIM Registration Law

Mexico is the most visited country in Latin America, and staying connected there is easy. But two things changed the math recently: airport SIM prices keep climbing, and Mexico's 2026 SIM registration law turned a quick SIM purchase into an identity-verification errand.

The 2026 registration law, in brief

Mexico moved to mandatory identity verification for mobile lines. New local SIM activations require ID: CURP-linked biometric verification for Mexican nationals and passport-based registration for foreigners. The stated goals are fighting extortion and kidnapping-enabled fraud; the side effect is that the casual "buy a SIM at the OXXO" routine is gone.

We covered the details in our blog post on Mexico's cell phone registration law. The short version for travelers: a travel eSIM is not a Mexican SIM, so the registration regime does not apply to it. A nadanada Mexico eSIM needs no passport, no CURP, no account and no email. You pay with crypto or card, scan the QR code, and the plan connects when you land.

How much data do you need?

Mexico trips are navigation- and messaging-heavy. WhatsApp is the universal channel: hotels confirm bookings on it, and drivers and tour operators will call you there too.

Trip length	Light user	Typical user	Heavy / remote work
1 week	3 GB	5-8 GB	10-15 GB
2 weeks	5-8 GB	8-12 GB	15-25 GB
1 month	8-12 GB	15-20 GB	30 GB+

What eats data in Mexico specifically: Google Maps in CDMX traffic, Instagram from beaches, and video calls home across time zones. Set photo backup to Wi-Fi only and a mid-size plan goes a long way.

Coverage: where eSIMs work

Cancun, Playa del Carmen, Tulum, Cozumel: strong 4G/5G along the whole corridor
Mexico City, Guadalajara, Monterrey: excellent urban coverage
Puerto Vallarta, Los Cabos, Oaxaca coast, Merida: good tourist-area coverage
Patchy zones: Sian Ka'an reserve, remote cenotes, Copper Canyon, rural Chiapas, long Baja highway stretches. Download offline maps before excursions.

nadanada eSIMs roam across multiple Mexican networks, so your phone picks the strongest available carrier. That is useful in coastal towns where one network dominates.

Practical tips for Mexico

Install the eSIM before departure. Validity starts on first connection in Mexico, so you can land already online.
WhatsApp is essential. Your eSIM data makes it work immediately; keep your home number reachable for bank SMS on the second SIM slot.
Ride-hailing: Uber, DiDi and inDrive all operate in major cities; having data at the arrivals curb avoids the airport taxi negotiation.
Start smaller, top up later. Adding data mid-trip to the same eSIM takes a minute, with no reinstall and no new QR code.
Resort Wi-Fi caveat: many all-inclusives throttle free Wi-Fi or charge for usable speeds. A travel eSIM is often the better connection inside the resort too.