In Mexico, a travel eSIM bought before departure gives you internet as soon as you land, with no stop at a store. If you prefer a Mexican line, note that since 9 January 2026 every new line must be registered in its user’s name: for a foreigner, with a valid passport, according to Telcel.
This guide to getting an eSIM for Mexico compares travel eSIMs, your home carrier’s option and a Mexican line, and explains the mobile line registry, the networks (Telcel, AT&T México, Movistar), installation and tips for a road trip in the Yucatán or a stay in Mexico City. The basics are in our guide to travel eSIMs.
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eSIM Mexico: key facts
- Roaming: charges on your home plan depend on your carrier and plan (check the Mexico zone, the included data and the out-of-plan rate). The EU’s “roam like at home” regime does not cover Mexico.
- A travel eSIM (data only) is bought and installed before you leave.
- Mexican line: registration of new lines mandatory since 9 January 2026, with a passport for foreigners (Telcel).
- Three major networks: Telcel, AT&T México and Movistar.
- eSIM-compatible, unlocked phone; install on Wi-Fi before departure.
Will your home plan work in Mexico?
That depends on your carrier. For travelers on EU plans, Mexico is not part of the area covered by the European roaming regulation (EU, Iceland, Liechtenstein, Norway, Moldova, Ukraine, according to Your Europe, last checked 7 January 2026, read 27 October 2026). For US and UK plans, Mexico may be included with a data allowance, available through an add-on or daily pass, or billed outside your plan. Check the zone in your account or with your carrier before you leave.
How a travel eSIM works
An eSIM is a SIM chip built into the phone. Instead of inserting a card, you download an operator profile. A travel eSIM is a prepaid plan, most often data-only, valid for a set number of days, that relies on a Mexican operator’s network. Offers differ by data allowance, duration, the network or networks used, hotspot sharing, top-up and whether a local number is included.
The profile is installed by QR code or from the provider’s app. This step needs an internet connection: do it at home on Wi-Fi, then activate the line when you arrive in Mexico.
Is your phone compatible?
- eSIM compatibility: in your settings, look for “Add eSIM” or “Add cellular plan”. Dialing *#06# shows the IMEI and, on many models, an EID number when eSIM is supported.
- Unlocking: the phone must not be locked to your carrier, otherwise it will refuse another network’s profile.
- Dual line: most recent phones handle two lines (a physical SIM and an eSIM, or two eSIMs). This is what lets you keep your home number for text messages.
The mobile line registry in Mexico
Mexico has set up a registry of mobile phone users, overseen by the telecommunications regulator, the Comisión Reguladora de Telecomunicaciones (CRT), and implemented by each operator. Telcel’s official page says the registration applies to new lines “from 9 January 2026” and that, for foreigners, it “can only be done with a valid passport or, where applicable, a temporary CURP for foreigners” (our translation from the Spanish).
What this means for you: if you buy a Mexican SIM or eSIM, bring your passport and expect the registration step with the operator. A travel eSIM from a foreign provider works through roaming and is bought before departure. We could not read an official CRT page on how foreign lines roaming in Mexico are treated: Mexican press reports an exemption, but as we read no official source, check with your provider.
Mobile networks in Mexico
Telcel, AT&T México and Movistar are the country’s three major mobile brands, and most travel eSIMs rely on one or more of these networks. The provider states the network used: look at it if you leave the tourist areas.
What this means for you: coverage is dense in cities and beach resorts, more irregular inland, in the mountains and around some archaeological sites. For a road trip, download your maps for offline use.
Travel eSIM, carrier add-on or Mexican line?
| Solution | Who it suits | What to check |
|---|---|---|
| Travel eSIM (data) | Tourist stay | Network used, data allowance, duration, hotspot sharing |
| Add-on from your home carrier | Travelers who want to keep a single plan | Mexico zone, included data, out-of-plan rate |
| Mexican line (SIM or eSIM) | Long stay, need for a local number | Registration with a passport, operator’s conditions |
Installing your eSIM step by step
- Before departure, check eSIM compatibility and that the phone is unlocked.
- Buy the plan and note whether it starts at installation or at the first connection on site.
- Install the profile on Wi-Fi and label the line “Mexico” so you can find it easily.
- On arrival: select this line for cellular data, turn on data roaming for this line only if the provider asks you to, and turn off data on your home line.
- Leave your home line active to receive your bank’s text messages, after checking with your carrier that receiving texts abroad is not charged.
Mexico-specific tips
- Yucatán and Quintana Roo: between Cancún, Tulum and the Maya sites of the Yucatán, download your maps for offline use before leaving the coast.
- Mexico and the United States: if your trip takes in both countries, check that the eSIM covers both.
- Weather: according to the UK FCDO (GOV.UK, updated 20 October 2026, read 26 October 2026), the hurricane season in Mexico normally runs from June to November and can affect the Pacific and Atlantic coasts. Follow local alerts and see when to go to Mexico.
- Safety: the UK FCDO lists areas where it advises against all but essential travel, including the cities of Tijuana and Tecate and the states of Chihuahua, Sinaloa, Tamaulipas, Zacatecas, Michoacán, Colima and Guerrero (with exceptions it lists). The U.S. Department of State publishes a separate Mexico travel advisory (see its country information page, last updated August 11, 2025, read 26 October 2026). Read both before you plan your route; a connected phone is no substitute for these precautions.
- Two-factor authentication: keep your home line active for your bank’s text messages.
Common mistakes to avoid
- Buying an eSIM with a phone locked to a carrier.
- Installing the profile on arrival, without Wi-Fi: do it before you leave.
- Leaving data switched on for your home line: that is the line that would charge roaming.
- Deleting the profile during your stay: many cannot be reinstalled.
- Buying a local SIM without your passport on you for the registration.
- Choosing a “North America” eSIM without checking that it includes Mexico.
Buying an eSIM for Mexico
To compare, look at the local network or networks used, the data allowance, the validity period, hotspot sharing, top-up, whether a local number is included and when validity starts. For a road trip, favor a comfortable allowance and a network with good coverage outside cities; for a stay in Mexico City, a smaller allowance is often enough. A “data-only” plan is enough for most travelers: messaging apps replace calls.
You can buy from a travel eSIM provider, from a local operator if it offers a plan suited to visitors, or through a comparison site. In every case, read the refund conditions: an installed profile is generally no longer refundable.
Frequently asked questions
Does eSIM work in Mexico?
Yes, through roaming on a Mexican network, with an eSIM-compatible, unlocked phone.
Do you have to register your line in Mexico?
For a Mexican line, yes: since 9 January 2026, new lines are registered, with a passport for foreigners according to Telcel. For a foreign travel eSIM, ask the provider.
Which operators are there in Mexico?
Telcel, AT&T México and Movistar are the main mobile brands.
Will my home plan work in Mexico?
It depends on your carrier and plan: Mexico is outside the EU roaming zone, and US and UK plans vary. Check your plan or an add-on before you leave.
Can I keep my home number?
Yes, with a dual-SIM phone: your home line stays active for text messages.
Our sources
- Your Europe (European Commission), “Roaming charges” (last checked 7 January 2026), read 27 October 2026.
- Telcel, official page “Registro de usuarios de telefonía móvil” (telcel.com/activatulinea), checked 27 October 2026.
- UK FCDO, foreign travel advice for Mexico (GOV.UK, updated 20 October 2026), read 26 October 2026.
- U.S. Department of State, Mexico country information (travel.state.gov, last updated August 11, 2025), read 26 October 2026.
- Our methodology
Updated October 2026. Provider offers and conditions may change: check them before you buy.