If you are shopping for an eSIM for Mexico and staying a month, the cheapest plan is probably not a Mexico plan. On 23 September 2026 a three-country North America plan covering the United States, Canada and Mexico cost $33.99 for 10 GB over 30 days in our catalog. The cheapest Mexico-only plan with the same data and validity cost $46.99. The regional plan also wins at 5 GB and 20 GB.
There is a catch, and the supplier puts it in writing. The cheapest North America plans carry a note that they have weak network coverage in Mexico outside of main cities. This guide sets out every tier side by side, explains what that note means for a trip to Oaxaca or the Yucatán, and covers Mexico’s 2026 phone registration rules, which have confused a lot of visitors. Plan details change, so treat the live listing on each product page as the source of truth before you buy. The full list is on our Mexico plans page.
How many eSIM plans cover Mexico?
Our catalog had 1,677 published plans on 23 September 2026. Of those, 119 list Mexico in their coverage. Fifty-five of them are top-up packages that refill an eSIM you already installed, so the number that matters for a first purchase is 64.
| Group | Fresh plans | Top-ups | What it means for you |
|---|---|---|---|
| Mexico only | 10 | 4 | Two suppliers, with the clock and exit rules described below |
| Mexico plus other countries | 54 | 51 | From Mexico and USA packs to world plans covering more than 170 countries |
| Total covering Mexico | 64 | 55 | Every plan in our catalog that lists MX |
The multi-country group mixes very different products. Seventeen of the 54 cover ten countries or fewer, 16 cover 11 to 30, six cover 31 to 50, and 15 cover more than 50. For a Mexico trip the interesting ones are small: ten plans cover exactly the United States, Canada and Mexico, and seven cover exactly Mexico and the United States. Those are the plans priced close enough to the Mexico-only range to compete with it.
Mexico-only vs North America prices, tier by tier
For every data size and validity where both kinds of plan exist, here is the cheapest Mexico-only plan against the cheapest plan covering the US, Canada and Mexico.
| Data and validity | Cheapest Mexico-only | Cheapest North America (3 countries) | Cheaper option |
|---|---|---|---|
| 5 GB, 30 days | $31.99 | $18.99 | North America |
| 10 GB, 30 days | $46.99 | $33.99 | North America |
| 20 GB, 30 days | $43.99 | $37.99 | North America |
On all three matching 30-day tiers the plan covering more countries is cheaper, by $13.00 at both 5 GB and 10 GB and by $6.00 at 20 GB. The 20 GB North America plan is the standout. It cost $37.99, only $4.00 more than the 10 GB version, which works out to $1.90 per gigabyte. No Mexico-only plan in the catalog gets below $2.00.
The Mexico and USA packs sit alongside these. Their 10 GB, 30-day plan also cost $33.99 on the day we checked, and the range runs from 1 GB for 7 days at $5.99 up to 20 GB for 30 days at $54.99. They leave Canada out, and their listings say they do not work in Alaska.
The pattern holds wherever the two groups line up. The Mexico-only 1 GB plan and the North America 1 GB plan both cost $5.49, though the Mexico one lasts 5 days and the regional one 7. We looked at why regional plans so often undercut single-country ones in Multi-Country eSIM vs Single-Country: When Does the Price Flip?. Mexico is one of the clearest cases, because the break-even is zero: the regional plan is cheaper even if you never cross a border.
Why is the cheapest plan the one with a coverage warning?
Because the supplier behind it says so in its own listing. Every North America plan that wins a row in the table above comes from eSIMGo, and the listing carries this line: “This eSIM has weak network coverage in Mexico outside of main cities.” The same note appears on 13 of the 16 eSIMGo plans that include Mexico, including its larger Latin America plans. No Mexico-only plan in our catalog carries it, and neither do the Airalo or NextLink plans that cover Mexico.
The listing does not name which Mexican network the eSIM uses, so we cannot tell you which towns count as main cities. What we can say is what the note is for. If your trip is Mexico City, Guadalajara, Monterrey, Cancún or another large city, the cheapest plan is built for that trip. If you are driving the Yucatán between cenotes, taking buses through Chiapas, or heading into the Copper Canyon, the note is the supplier telling you not to rely on it there.
That leaves three sensible choices for a trip outside the big cities:
- A Mexico-only plan. Neither supplier of the ten Mexico-only plans carries a coverage warning. The 10 GB, 15-day plan cost $25.99, the cheapest 10 GB plan covering Mexico of any kind.
- Airalo’s North America plan. It has no coverage note and cost $37.99 for 10 GB over 30 days, $4.00 more than the eSIMGo plan.
- The Mexico and USA pack. Also no coverage note, $33.99 for 10 GB over 30 days, if you do not need Canada.
A backup matters more off the main routes than the choice of plan. Download offline maps for the whole region before you leave the city, and save hotel and car hire confirmations to the phone rather than a cloud folder.
When does the Mexico-only plan win?
On short trips. Most Mexico-only plans run 5 to 15 days, where the three-country plans have no direct match, and several of them are cheaper than anything else that covers Mexico.
| Mexico-only plan | Price | What stands out |
|---|---|---|
| 1 GB, 5 days | $5.49 | Same price as the 7-day North America 1 GB plan |
| 3 GB, 7 days | $10.99 | Cheapest 3 GB plan covering Mexico |
| 5 GB, 15 days | $15.99 | Cheapest 5 GB plan covering Mexico |
| 10 GB, 15 days | $25.99 | Cheapest 10 GB plan covering Mexico |
| 20 GB, 30 days | $43.99 | Beaten by North America 20 GB at $37.99 |
| 30 GB, 30 days | $59.99 | Largest fixed-data plan with Mexico only |
Per gigabyte, the Mexico-only range runs from $5.49 on the 1 GB plan down to $2.00 on the 30 GB plan. For a week in Tulum or ten days in Mexico City, a 15-day Mexico-only plan is the cheapest option in the catalog. The regional plans only take over once you need 30 days.
There is a difference in how the two Mexico-only suppliers start the clock. The six TSimTech plans, which include the 3 GB, 5 GB, 10 GB, 20 GB and 30 GB tiers above, say the package activates when the eSIM connects to a network. The four Sparks plans, and every multi-country plan covering Mexico except two, start on first data use. With TSimTech, the days begin when your phone lands and attaches to a Mexican network, whether or not you open an app, so leave the line switched off until you actually want it. The mechanics are covered in When Does a Travel eSIM’s Validity Clock Actually Start?.
The other trade-offs are on the product sheet. All six TSimTech plans list 4G only and cannot be topped up. The four Sparks plans list 5G and can be topped up, but cost more: 10 GB over 30 days is the $46.99 plan in the tier table.
Do you need to register an eSIM under Mexico’s new phone law?
Not for a travel eSIM that roams, at least for now. The rule applies to lines issued in Mexico, and the regulator has said roaming visitors are outside it until it writes a separate mechanism.
The background is a set of guidelines Mexico’s Telecommunications Regulatory Commission (CRT) approved in December 2025 and published in the Diario Oficial de la Federación on 9 December 2025. The CRT’s announcement says that from 9 January 2026 every mobile line must be linked to a named person or company. Individuals link a line with an official ID, either a voter card or a passport, plus their CURP, the national population registry code. The guidelines list a passport as the document for foreigners. On 25 June 2026 the CRT published a calendar for suspending unlinked prepaid lines, staggered by the last digit of the number between August and December, with service cut within 72 hours of each deadline. A suspended line can still call emergency and citizen-service numbers and its own phone company, and still receives earthquake alerts.
Visitors are treated differently. A transitional article in the same guidelines says that once the 2026 FIFA World Cup ends, the CRT will define how lines using international roaming should be linked. In May 2026 the CRT said on its official account that foreign visitors using international roaming would not need to register, while visitors who buy a Mexican SIM or eSIM must link it to their passport. Trade press reported in August 2026 that the roaming mechanism was being prepared and would go to public consultation, with no deadline announced.
Every plan in our catalog is issued outside Mexico and roams on Mexican networks, so it falls on the roaming side of that line. Two things follow. You do not need a CURP or a Mexican registration step to use one in September 2026. And this is a rule to recheck before a trip later in the year or in 2027, because the regulator has said roaming lines are next. If you buy a local Telcel or AT&T SIM at the airport instead, expect to hand over your passport details so the seller can link the line.
Which networks will you be on in Mexico?
Mexico is dominated by one operator. Regulator figures for the second quarter of 2025, reported by Xataka México, put Telcel at about 58.9% of active mobile lines, AT&T at 16.2%, Movistar at 14.7% and Walmart’s Bait at 5.9%. Movistar does not run its own radio network any more. Telefónica, which owns Movistar, says it uses AT&T’s 3G, 4G and 5G network under an agreement extended in April 2024 to 2030. In practice that makes Mexico a two-network country for most visitors: Telcel and AT&T.
None of the listings for plans covering Mexico in our catalog names the Mexican network it roams on, which is common with travel eSIMs. If rural coverage matters to you, the practical test is the supplier’s own warning described above, rather than a network name you cannot check.
On speed, four of the ten Mexico-only plans list 5G, all from Sparks. Among the 54 multi-country plans only six list 5G, and they are exactly the six eSIMGo North America plans, the same ones that carry the coverage note. If your phone shows 4G, that is normal on most of these plans and not a fault.
Which country’s IP will a Mexico eSIM show?
None of the plans in our catalog exits in Mexico. Websites and apps will see an IP address from somewhere else, and the exit depends on the supplier.
| Plans covering Mexico | Declared exit country |
|---|---|
| Mexico-only, TSimTech (6) | Singapore |
| Mexico-only, Sparks (4) | United Kingdom |
| Mexico and USA plus other NextLink plans (13) | United States |
| North America, eSIMGo (6) | United Kingdom or Ireland |
| Latin America and wider plans, eSIMGo (10) | Belgium |
| Global plans, Three (2) | Hong Kong |
| Not declared, Airalo (10) and Ubigi (7) | Blank field |
For maps, messaging and browsing this does not matter. It does matter for streaming, because apps choose a catalogue from the IP address, so a UK or Singapore exit will show that country’s library. A blank field means unknown, not Mexican. If you want the connection to look American, the Mexico and USA packs are the only group here that declares a US exit. We explain how exit points work in Which Country’s IP Will Your Travel eSIM Show?.
Border crossings, cruises and your home plan
The North America plans earn their price for three kinds of trip.
Driving or flying through the US. If you connect through Houston or Los Angeles, or drive across at Tijuana or El Paso, a plan covering both countries keeps working on both sides. Border towns are also where phones pick up the other country’s network by accident, so a plan that covers both takes that problem away. Our USA travel eSIM guide covers the US half of the trip.
Cruises. Many Mexican Riviera and western Caribbean cruises stop at Cozumel, Cabo San Lucas or Ensenada. The eSIM works in port on the Mexican network. At sea it does not, and the ship’s own mobile network is a separate service that can be very expensive on your home line. Switch data roaming off on your home SIM before you board. We compare the options in Cruise Ship Wi-Fi vs eSIM.
US and Canadian phone plans. Check what you already pay for before buying anything. AT&T says its unlimited plans include data, talk and text in Mexico at no extra cost, with a note that 2G speeds may apply off its partner network. Rogers says its Canada+US+Mexico plans use your home data allowance in Mexico with no roaming fee, and Telus added Mexico to one of its plans in April 2026. Other plans charge by the day. If your plan already covers Mexico with enough fast data, you may not need an eSIM at all. If it does not, a travel eSIM for data plus your home line for calls and texts is the usual split.
That split matters for one more reason. Every plan in this comparison is data only, with no Mexican phone number. WhatsApp is how most Mexicans message, used by 96% of the country’s internet users in the Asociación de Internet MX survey published in 2024, so restaurants, drivers and tour operators will expect it, and it works over data, but bank verification codes still arrive by SMS on your home number. Is a Data-Only eSIM Enough? goes through how to keep receiving them.
Hotspot, top-ups and unlimited plans
All 64 plans covering Mexico allow hotspot sharing, so one plan can serve a laptop or a travel partner’s tablet.
Top-ups vary more. Four of the ten Mexico-only plans can be topped up, all from Sparks. The six TSimTech plans cannot, so if you run out you buy a new plan. Among the 54 multi-country plans, 52 can be topped up.
The only plans sold as unlimited are three Latin America plans covering 11 countries: one day for $9.49, three days for $24.99 and five days for $39.99. Their listings say speed drops to 512 kbps after 1 GB of high-speed data each day, for the rest of that day. For most trips a fixed 20 GB plan goes further for the money. Five days of unlimited cost $39.99, which is more than 20 GB for 30 days on the North America plan at $37.99.
FAQ
What is the cheapest eSIM for Mexico?
On 23 September 2026 the cheapest plan covering Mexico was $5.49 for 1 GB, sold both as a 5-day Mexico-only plan and as a 7-day North America plan. For 10 GB the cheapest was a Mexico-only plan at $25.99 for 15 days. For 10 GB over 30 days, a North America plan at $33.99 beat the cheapest Mexico-only plan at $46.99.
Do I need to register my eSIM with a CURP in Mexico?
Not if it is a foreign travel eSIM roaming in Mexico. Mexico’s 2026 line registration applies to Mexican-issued lines, and the CRT said in May 2026 that visitors using international roaming do not need to register. It has also said it will set rules for roaming lines after the World Cup, so check again before a later trip. A Mexican SIM or eSIM bought locally must be linked to your passport.
Is a North America eSIM good for rural Mexico?
It depends on the supplier. The cheapest North America plans in our catalog say they have weak network coverage in Mexico outside of main cities. For the Yucatán, Oaxaca or Chiapas, a Mexico-only plan or an Airalo North America plan carries no such warning.
Does a Mexico eSIM come with a Mexican phone number?
No. Every plan covering Mexico in our catalog is data only. Use WhatsApp or another app for calls and messages, and keep your home SIM active for bank texts.
Will my US phone plan work in Mexico?
Some do. AT&T says its unlimited plans include data in Mexico at no extra cost, though 2G speeds may apply off its partner network. Other plans charge daily or limit fast data, so check your own plan’s roaming page. If Mexico is not included, a travel eSIM for data is usually cheaper than a roaming add-on.
Conclusion: pick by trip length and route, not by the country name
For a Mexico trip of about a month, the North America plan is the cheaper buy at 5, 10 and 20 GB, and the 20 GB version at $37.99 is the lowest price per gigabyte of any plan covering Mexico. Read the coverage note first, though. If your route goes beyond the main cities, either pay $4.00 more for the North America plan without the warning, or pick a Mexico-only plan. For trips of two weeks or less, the 15-day Mexico-only plans are the cheapest option of any kind. Registration is not a problem for travel eSIMs today, but it is a rule to watch.
Before you buy, confirm
- The listing does not warn about weak coverage outside cities, if you are leaving the main cities;
- The validity matches your trip, and 15-day Mexico-only plans are cheaper for short stays;
- You know whether the clock starts on first data use or when the eSIM connects to a network;
- You are comfortable with the exit country, and a blank field means unknown;
- Your home SIM stays active for bank texts, since no plan here includes a Mexican number;
- You have checked whether your home plan already includes Mexico.
Soft next step
Open the full catalog to compare coverage, exit country and clock rules side by side. Plan details change, so treat the live listing on each product page as the source of truth before you buy.