Travel Mexico eSIM | Telcel, AT&T & Movistar Coverage
Roami
Roami is a global eSIM carrier focused on travel connectivity. This guide is compiled from network data, official carrier and manufacturer documentation, and traveler inquiries.
📑 Table of Contents
Mexico’s three national networks pull apart sharply once you leave the cities. On Ookla’s 2H 2025 Mexico report, Telcel was named both Best Mobile Network overall and Best 5G Network, with a consistency score of 90.5% and a Speed Score of 64.11. AT&T Mexico and Movistar sit behind on every measured metric, and a fourth name in the data, ALTAN Redes, is the wholesale network that smaller brands ride on rather than a line you buy yourself. What settles the choice of a Mexico eSIM is your route, not the brand. If Mexico’s carriers oversell in their marketing, we call it out — see the registration section for the fine print that matters.
Quick answer: Telcel wins the coverage argument in Mexico, Movistar wins on cheap data — the tables below settle the details. You can also try the Mexico network setup through Roami’s free network test before paying anything.
If the basics are still open questions — does my phone support eSIM, and what actually happens during activation — the compatibility list and eSIM activation explained answer both. What follows is a money question, not a technology question: which carrier earns your cash.
The verdict up front: Staying in Mexico City, Cancún or Los Cabos? Telcel is the strongest and most consistent network in the country, and it holds signal in rural stretches where AT&T and Movistar fade. Want a prepaid eSIM with no store visit? AT&T Mexico sells one through its AT&T Go app, and Movistar issues one by QR code after you link your passport. Driving into the United States or living near the border? AT&T’s North America roaming is the standout. Or skip the paperwork entirely: no-charge test eSIM tests the networks at no cost, and WEB20 trims 20% off Mexico prepaid eSIM plans.
Who you can actually buy a prepaid eSIM from
This first section maps the carriers you can actually buy a prepaid eSIM from as a visitor, and it shows the direct-versus-travel decision in one view. Mexico adds a twist that Canada and Japan do not: every prepaid line, eSIM included, must be linked to an official ID before it works.
Telcel, AT&T and Movistar side by side
| Telcel | AT&T Mexico | Movistar | |
|---|---|---|---|
| Prepaid eSIM for visitors | Yes, through the Amigo prepaid brand, via the Mi Telcel app, telcel.com or a service center | Yes, through AT&T Go, an app-only prepaid eSIM | Yes, by QR code after you link your passport or local ID |
| Best measured strength | Best Mobile Network and Best 5G Network in Ookla 2H 2025; consistency 90.5% | Second network on most scores; strong US and Canada roaming | Third on most scores; cheaper urban prepaid |
| Cheapest prepaid entry | Recharges from 100 MXN on Amigo Sin Límite tiers | AT&T Go 6.5 GB for 150 MXN, 30 days | Recharges from 100 MXN, validity 10 to 30 days |
| Getting it as a visitor | ★★ — needs the standard prepaid identity registration, not a walk-up tourist product | ★★★ — fully app-based, no store, needs a Mexican ID or passport | ★★ — QR activation, but only inside Mexico under native coverage |
Read that table carefully, because it contains the single most useful fact on this page: all three national carriers now sell a prepaid eSIM, but none of them sells a clean, anonymous tourist eSIM at the airport counter. Every one routes you through Mexico’s identity-registration system, which means a passport (or a local ID) is mandatory before the line goes live. The difference is only how much of the process happens in an app versus a service center.
Which budget brands and regional options sell eSIMs?
Mexico’s fourth tier is where visitors find the cheapest data, but it rides on someone else’s towers.
| Brand | Underlying network | eSIM | Ideal user |
|---|---|---|---|
| AT&T Go | AT&T Mexico | App-only prepaid eSIM, no store needed | Border travelers and anyone who wants US and Canada roaming |
| Movistar prepaid eSIM | Movistar | QR after passport or local ID linking | City stays where Movistar is cheap |
| Wim by AT&T | AT&T Mexico | 100% eSIM digital brand | App-first buyers who want bundled lifestyle perks |
| Brands on ALTAN Redes | Wholesale Red Compartida network | eSIM where offered | Deep rural spots where only the shared network reaches |
Two cautions. First, a prepaid plan bought from any of these brands is tied to one network, so you get AT&T’s towers on AT&T Go and nobody else’s, which matters the moment you leave the city. Second, the identity-registration requirement applies to all of them, so there is no anonymous travel SIM in Mexico anymore.
Can you buy a Mexico eSIM from Telcel?
| Direct from a Mexican carrier | Travel eSIM on a Mexican network | |
|---|---|---|
| What you need | Passport or local ID; the carrier registers your line before it works | A compatible, unlocked phone |
| How the profile arrives | App, QR code, or a service center visit | QR code or app install immediately after checkout |
| Typical cost | Recharges from 100 MXN; the line itself is low or symbolic cost | One upfront price, no registration step |
| Network access | One carrier | Automatic switching between Telcel, AT&T and Movistar |
| Identity rule | Passport or local ID linked before activation | Passport uploaded at checkout on some products |
| Best for | Long stays, or anyone who needs a Mexican phone number | Trips of days to weeks, online the moment you land |
On a typical two-week trip the arithmetic is one-sided. A Mexican prepaid plan is built for residents who want a local number, and it adds an identity-registration step that a travel eSIM avoids. Where the carrier wins is longevity and voice: a real Mexican number, unlimited domestic calling, and a plan that still works in month six. A travel eSIM wins on convenience and on reaching more than one network without buying twice.
💡 A multi-network eSIM profile is the practical middle path: Roami’s Mexico eSIM keeps the convenience of instant delivery, switches automatically between Telcel, AT&T and Movistar, and still lands you on Telcel in the sierra and AT&T at the border without buying twice.
What your phone needs to work in Mexico
Three things decide whether your phone works on a Mexican carrier: its bands, its lock status, and a short list of device-specific quirks. All three are covered below, because a locked or band-limited handset is the most common reason a Mexico eSIM install fails.
Which bands do Mexico networks use?
Mexican carriers build 4G on bands 2, 4, 5 and 7, and 5G on n41 and n78. Most international handsets cover those, but a few regional variants miss band 5 at 850 MHz, which is the low-band layer that carries signal into buildings and across the Oaxaca sierra. Phones that miss it still work in the big cities and fall back to band 4 and band 7 elsewhere.
There is no homework on frequency bands required here. Model number beats marketing name every time, so match yours against phone compatibility list. Before your flight, what happens during eSIM activation explains what the phone is actually doing when a profile arrives.
Does Mexico require carriers to unlock phones?
A locked phone is the first failure to rule out, and Mexico has unusually clear rules here. Under guidelines from the IFT, the Federal Telecommunications Institute, carriers must unlock a device at no charge. Prepaid handsets, such as a phone bought with an Amigo Kit, are sold already unlocked. Postpaid or financed devices are unlocked once the contract ends or the device is paid off, and the carrier must deliver the unlock code within 24 hours of the request.
Look at: Settings → General → About → Carrier Lock (iPhone). If that field says “No SIM restrictions,” the phone will accept any profile. If the phone reports “SIM locked,” no outside eSIM will go in until that is resolved.
Fix it: request the unlock from the operator that sold the handset; IFT rules oblige them to provide it. Devices that are paid off are normally cleared within a day, and there is no fee. Only then try installing your eSIM.
Phones sourced from US or European operators may still be locked, so verify before departure. Full detail: IFT — unlocking your device.
Which device quirks affect a Mexico eSIM?
| Device | Symptom | What to do |
|---|---|---|
| Carrier-purchased phone still under contract | eSIM install fails or line will not register | Unlock through the original carrier first, then retry |
| International handset missing band 5 | Fast in cities, weaker in the sierra and inside buildings | Expected behavior; prefer Telcel, which has the widest low-band reach |
| Mainland-China iPhone models | No “Add eSIM” option at all, the hardware is disabled | Not fixable; use a different device |
| Dual-SIM users | eSIM installed but no data | Set the eSIM as the line used for mobile data |
What remains is phone-specific behaviour, not something Telcel or AT&T controls. Ten seconds with the eSIM device checker is cheaper than a plan you cannot use in Oaxaca.
How to get a Mexico eSIM
Four routes exist, and they differ more in paperwork than in price: Telcel through Amigo prepaid, AT&T Mexico through AT&T Go, Movistar by QR code, and a travel eSIM that rides all three. Each route, step by step.
The Telcel Amigo eSIM, step by step
Telcel is Mexico’s dominant carrier, so its eSIM is the one most visitors ask about first. The Amigo prepaid eSIM is the cardless version of Telcel’s Amigo prepaid line: same calls, messages and data, installed as a profile instead of a plastic chip.
Telcel Amigo eSIM, step by step:
- Confirm your phone is eSIM-compatible and unlocked.
- Request the Amigo eSIM through the Mi Telcel app, telcel.com, or a Telcel customer service center.
- Scan the QR code or install the profile from your phone’s settings.
- Complete the prepaid identity registration so the line goes live.
- Make your first top-up; the line stays active for up to 60 days without a recharge.
Telcel’s own prepaid tiers are the cheapest way to hold a Mexican line without a contract, and the cost of the line itself is low or symbolic. What you actually pay for are the recharges. Telcel notes that the Amigo eSIM is designed for someone using a Mexican line continuously, which means it is best once you pass the pure tourist window and want a local number. If you only need data for a week, a travel eSIM is less friction; check its hotspot terms if you plan to tether a laptop.
The AT&T Go eSIM, step by step
AT&T Mexico is the one national carrier that sells a genuinely app-only prepaid eSIM, and that makes it the easiest for a visitor who never wants to visit a store. Its AT&T Go product is available only through eSIM technology on compatible smartphones, and it is bought and activated entirely inside the Mi AT&T app.
AT&T Go eSIM, step by step:
- Install the Mi AT&T app from Google Play or the App Store.
- Scan the onboarding QR code or open the app link.
- Activate the eSIM at no cost.
- Pick an AT&T Go package and install the profile.
- Link your Mexican ID or passport during sign-up.
| Package | Data | Validity | Price (MXN) |
|---|---|---|---|
| AT&T Go small | 6.5 GB | 30 days | 150 |
| AT&T Go medium | 10 GB | 30 days | 200 |
| AT&T Go large | 20 GB | 30 days | 300 |
All three AT&T Go packages include unlimited calls and SMS in Mexico and the United States, which is the carrier’s real differentiator: a single prepaid eSIM that works across the border. If your trip touches both countries, that beats a Mexico-only line that dies at the crossing.
The Movistar prepaid eSIM, step by step
Movistar is Mexico’s third national carrier, and it sells a prepaid eSIM, but the path has one quirk worth knowing before you fly. By official provision, you must link your line to your INE, CURP or passport, and the eSIM remains inactive until that linking is complete. The profile must also be installed while you are in Mexico under Movistar’s own native coverage, not the extended coverage it buys from Telcel.
Movistar prepaid eSIM, step by step:
- Buy the eSIM from a seller that issues the QR code.
- Receive the QR by email with a linking link.
- Link your passport or local ID through the link sent to you.
- Install the profile by QR code once you are physically in Mexico.
- Wait for activation; the line stays valid for up to 60 days without a recharge.
Movistar prepaid recharges run from 100 MXN upward, and the data allowance per recharge changes with promotions, so confirm the exact gigabytes in the app on the day you buy. The carrier is cheapest in cities and thins out in rural areas, which is exactly where Telcel pulls ahead.
What to prepare before buying a Mexico eSIM
- Passport — required for every carrier eSIM as a foreigner; locals use INE or CURP
- IMEI — dial
*#06# - EID — also from the
*#06#screen; the eSIM’s own identifier - Unlocked phone — Carrier Lock must show No SIM restrictions, otherwise no eSIM will install
- Wi-Fi — install the profile before you fly, not at the airport
- A card that works in Mexico — some carrier checkouts reject foreign billing addresses
Plans and current tiers live on our Mexico eSIM page. Install before you fly, and the line greets you on touchdown instead of fighting airport Wi-Fi.
How Telcel, AT&T and Movistar actually perform
Two factors shape the choice here: how each network performs on your specific route, and what the trip is for. The numbers below settle the first; the trip table settles the second.
Telcel vs AT&T: which Mexico carrier is faster?
All figures below come from Ookla’s Speedtest Connectivity Report for Mexico, collection period July to December 2025, and are national-level measurements. The fourth row, ALTAN Redes, is the wholesale Red Compartida network that smaller brands use.
| Metric | Telcel | AT&T Mexico | Movistar | ALTAN Redes |
|---|---|---|---|---|
| Speedtest Connectivity Score | 73.1 (highest) | 61.41 | 63.21 | 52.78 |
| Speed Score | 64.11 (fastest) | 39.6 | 43.35 | 28.43 |
| Consistency Score | 90.5% (best) | 70.8% | 80.8% | 68.8% |
| Video Streaming Score | 80.44 (best) | 77.6 | 76.47 | 73.4 |
| Game Score | 77.73 (best) | 74.03 | 71.75 | 56.48 |
| 5 Star Rating | 3.51 (top) | 2.71 | 3.22 | 2.79 |
Source: Ookla Speedtest Connectivity Report — Mexico, July to December 2025, the per-carrier report. The Consistency Score counts the share of samples that clear 5 Mbps down and 1 Mbps up. Telcel won both Best Mobile Network and Best 5G Network for the period. A blank cell always means the report withheld a number, never that one was guessed.
For context on the country as a whole, Ookla’s Speedtest Global Index measured a median mobile download of 46.39 Mbps in Mexico for August 2026, ranked 82nd globally, with 33 ms latency. Cable.co.uk prices 1 GB of Mexican mobile data at roughly USD 2.03, 162nd of 237 markets, so local data is mid-priced rather than cheap. On market structure, Telcel closed 2025 with about 57.5% of active mobile lines according to regulator CRT data, against roughly 15% for AT&T and 12 to 14% for Movistar, which is why Telcel’s coverage advantage shows up everywhere you travel.
Matching a Mexico eSIM to your trip
| Your itinerary | Top pick | Why it wins | Watch out for |
|---|---|---|---|
| City break in Mexico City | Telcel | Highest consistency, recovers fastest after congestion | The metro subway has poor signal on every carrier |
| Beach resort in Cancún and the Riviera Maya | Telcel | Strongest along the Hotel Zone and resort corridors | Coastal road south of Tulum goes patchy |
| Los Cabos and Baja California Sur | Telcel | Best reach in the cape cities | Long highway gaps through the desert |
| Oaxaca sierra and rural Mexico | Telcel | Best consistency at 90.5%, widest low-band reach | Deep valleys and remote pueblos still drop |
| Cross-border trip into the United States | AT&T Mexico | AT&T Go includes US and Canada roaming | A Mexico-only eSIM dies at the border |
| Budget city stay | Movistar prepaid eSIM | Cheapest urban recharges | Must be activated inside Mexico |
| Long stay with a local number | Telcel Amigo eSIM | Local number, no contract | Requires identity registration up front |
Telcel vs AT&T: coverage compared
Mexico’s coverage follows population: dense in the metro areas, thinning fast along rural highways and vanishing in the deep sierra. What that means route by route.
| Region | Reality on the ground |
|---|---|
| Mexico City and the central highlands | All three national networks are strong downtown; Telcel posts the highest consistency, so it recovers fastest after congestion inside big venues and the metro. |
| Cancún and the Riviera Maya | Resort corridors and the Hotel Zone are well served by Telcel and, to a lesser extent, Movistar; signal thins on the coastal road south of Tulum and toward Bacalar, where travelers report dead stretches in the jungle. |
| Los Cabos and Baja California Sur | Coverage hugs Cabo San Lucas, San José del Cabo and the corridor between them; the Transpeninsular Highway between towns is where drivers report the longest signal gaps. |
| The Oaxaca sierra | Mountainous terrain in the Sierra Madre del Sur keeps coverage patchy; Telcel reaches the most villages, but deep valleys and remote pueblos still drop out, so download offline maps before any bus or trailhead. |
| Baja California border state | Tijuana, Ensenada and Mexicali are dense and reliable; once you leave the border corridor for the interior, the same highway gaps appear as in the south. |
| Crossing into the United States | A Mexico-only eSIM stops at the border with no warning; for trips that touch both countries, a North America plan or the regional eSIM saves buying twice. |
Planning a route that leaves Mexico? Compare eSIM for the United States, Guatemala travel eSIM, or a North America eSIM if your itinerary crosses borders more than once.
The trick underneath all of this is leaving network selection on automatic. A Mexico eSIM that can move between Telcel, AT&T and Movistar covers the regional gaps that any single-carrier plan cannot.
When do APN settings matter in Mexico?
The APN panel is somewhere most visitors never go, and that is why it tops the checklist when data misbehaves. The settings for each Mexican operator follow, covering the odd case where manual entry is unavoidable, with the exact menus.
APN values for Telcel, AT&T and Movistar eSIMs
You will only need these if you bought a SIM or eSIM directly from a Mexican carrier. Roaming profiles such as a travel eSIM bring their own APN, and editing it usually breaks them.
| Carrier | APN | Username | Password |
|---|---|---|---|
| Telcel | internet.itelcel.com |
blank | blank |
| AT&T Mexico | ai.attmx.com |
blank | blank |
| Movistar | internet.movistar.mx |
blank | blank |
Leave username and password empty. Some Telcel guides list webgprs and webgprs2002 for older accounts; if automatic configuration did not run, try those only when the blank values fail. If a carrier requires a value, the activation instructions that came with your profile will state it.
When to set a Mexico APN manually
- A phone too old to pull carrier settings automatically
- A profile installed with a manual activation code instead of a QR scan
- A carrier-issued prepaid eSIM where automatic configuration did not run
- Almost never on a travel eSIM, which is the point of a managed profile
How to enter a Mexico APN manually
- iPhone: open Settings → Cellular → tap the eSIM line → Cellular Data Network → key in the APN
- Android: Settings → Connections → Mobile Networks → Access Point Names → add a new APN
After saving, restart the phone. Before deeper troubleshooting, confirm that Mobile Data points at the eSIM instead of your home line.
Mexico eSIM: activate it and keep it working
One pass through this section takes you from a clean install to a working data connection, and it covers the failure patterns a Mexican network can actually produce, in the order you will hit them.
Installing your Mexico eSIM
| # | Check | What you want to see |
|---|---|---|
| 1 | The phone accepts any network | Settings → General → About → Carrier Lock shows “No SIM restrictions” |
| 2 | eSIM hardware is present | Dialing *#06# lists an EID, or the handset compatibility checker clears your model |
| 3 | The QR code is backed up | A screenshot kept on the phone and in cloud storage |
| 4 | Profile ready before the flight | Installed over home Wi-Fi; it wakes the moment you land |
| 5 | Data routing prepared | eSIM chosen for mobile data with roaming switched on |
Do step 4 at home. Mexico City and Cancún arrival halls have congested Wi-Fi exactly when you need it most, and a profile you install on the ground competes with everyone else’s.
Activating your Mexico eSIM
If you would rather follow screenshots than a summary, the step-by-step eSIM activation guide walks the whole install. What differs by carrier:
| Carrier | Activation difference |
|---|---|
| Telcel Amigo | Requested in the Mi Telcel app, on telcel.com, or at a service center; identity registration must clear before the line is live |
| AT&T Go | Fully app-based in Mi AT&T; no store visit; ID or passport linked during sign-up |
| Movistar prepaid | QR install, but the line stays inactive until you link your passport or local ID, and only inside Mexico under native coverage |
| Travel eSIMs | Install by QR code, and the same profile roams onto whichever of Telcel, AT&T or Movistar is strongest |
Four moves to rescue a Mexico eSIM
General activation errors, a profile that will not download, a scan that fails, and an eSIM that installs but never registers are covered in our eSIM activation troubleshooting guide. Below are the four patterns that show up specifically in Mexico.
A. The eSIM will not install
- Confirm the phone itself is unlocked — in About, Carrier Lock must say “No SIM restrictions”
- Treat the QR code as one-shot: clean, unscanned, and ready
- Ask the carrier whether the line has cleared its identity registration yet
B. Installed, but no signal bars
- Re-check the lock status
- Settings → Cellular → Network Selection → select Telcel, AT&T or Movistar manually instead of automatic
- Full network settings reset, then another reboot
C. Signal bars, but no internet
- Look the entries over against the table above once more
- Be sure the data route runs through the eSIM instead of your home card
- Check you have not hit a fair-usage throttle; prepaid recharges can drop to a floor after the allowance
D. Dead zone on the Baja highway or the Riviera Maya road
- If you are on Movistar, remember it must run on native coverage, not Telcel-extended, so switch to Telcel where possible
- Switch to Telcel, which has the widest low-band reach into the sierra and rural interior
- Download offline maps before any long highway or trailhead drive
What to gather before contacting Mexico eSIM support
| Needed info | Where to find it |
|---|---|
| Order or account number | Confirmation email |
| Phone model and OS version | Settings → About |
| EID | *#06# |
| Screenshot of the error | Take it before the screen changes |
| Current APN settings | Settings → Cellular Data Network |
| Data roaming status | Settings → Cellular → your eSIM line |
| Identity-registration status | The linking confirmation from your carrier |
The Mexico eSIM questions people actually search
These are the questions travelers actually type into search, answered from the facts above.
Can I buy a prepaid eSIM directly from Telcel as a visitor?
Yes, through the Amigo prepaid brand. Telcel issues the Amigo eSIM via the Mi Telcel app, telcel.com, or a customer service center, and the cost of the line itself is low or symbolic. The catch is the standard prepaid identity registration, which means your passport or local ID must be linked before the line works, so it is not the instant airport product a pure tourist might want.
Does AT&T sell a prepaid eSIM that visitors can use?
Yes, and it is the easiest of the three. AT&T Go is an app-only prepaid eSIM bought and activated entirely inside the Mi AT&T app, with no store visit and no physical chip. Packages run 6.5 GB for 150 MXN, 10 GB for 200 MXN and 20 GB for 300 MXN over 30 days, and they include unlimited calls and SMS in Mexico and the United States, which is the carrier’s real edge for border travelers.
Can international visitors get a Movistar eSIM?
Yes, by QR code, but with a quirk. Movistar requires you to link your passport, INE or CURP before the line goes live, and the profile must be installed while you are physically in Mexico under Movistar’s native coverage rather than the Telcel-extended network. The reward is the cheapest urban prepaid recharges, which makes Movistar a good city-stay choice once you are set up.
Rural coverage in Mexico: Telcel vs AT&T
Telcel, on the evidence. It recorded the best Consistency Score in Ookla’s 2H 2025 Mexico data at 90.5%, the share of tests meeting a 5 Mbps down and 1 Mbps up threshold, which is the closest thing to a rural reliability measure. AT&T landed at 70.8% and Movistar at 80.8%, so Telcel is the carrier to hold in the Oaxaca sierra and along the Baja highways.
Do prepaid SIMs in Mexico require ID?
Yes, for any carrier eSIM bought inside Mexico. Mexico’s 2026 mobile registry requires every prepaid line, physical SIM or eSIM, to be linked to an official ID, and foreigners use a passport while locals use an INE or CURP. A line that is not registered can be blocked, so complete the linking step before you rely on the connection. A travel eSIM may handle this at checkout instead, which is one reason visitors choose it.
Mexico trips and carrier-locked phones
Ask the carrier it is locked to. Under IFT guidelines, carriers must unlock a device at no charge; prepaid handsets such as an Amigo Kit are sold already unlocked, and postpaid or financed devices are unlocked once the contract ends or the phone is paid off, with the code delivered within 24 hours. Paid-off devices are usually cleared in a day. Check status at Settings → General → About → Carrier Lock.
Which phones work with a Mexico eSIM?
A Mexico eSIM needs an unlocked, eSIM-capable phone, and it helps if it supports band 5 at 850 MHz for low-band reach. The compatibility page settles EID support and the band question in one place. Unclear on the install itself? how an eSIM profile installs takes you through it.
Activating on Telcel, AT&T and Movistar
Work the four Mexico-specific patterns above in order, lock status, network selection, APN and data line, then profile reinstall, and if it still fails the wider error catalogue in eSIM troubleshooting guide covers the rest. Have your EID, order number, and your identity-registration confirmation ready before you contact support.
Can I use my home SIM and a Mexico eSIM together?
Yes, and it is a sensible setup. Leave the home number on its plastic SIM to keep taking calls and codes, and let the eSIM carry the data. Under Mobile Data in Settings, pick the eSIM and reserve the home line for calls. Two warnings apply: kill roaming on the home card to stop background charges, and note that data-only profiles cannot take SMS, so bank codes keep arriving on your usual number.
Why will a Movistar eSIM not activate abroad?
By official provision, Movistar requires the eSIM to be installed under its own native coverage, not the extended coverage it buys from Telcel, and the line stays inactive until you link your passport or local ID. That linking and the native-coverage check are why the profile will not complete abroad. Plan to install it after you land, on Mexican Wi-Fi, rather than before you fly.
What does an eSIM actually do inside a phone visiting Mexico?
Think of it as a chip built into the handset that stores carrier profiles, replacing the removable card entirely. The flow is simple: the operator delivers a profile, the phone files it on that internal chip, and the line behaves normally. Curious about SM-DP+ servers, or why that code works exactly once? eSIM activation mechanics explains both.
Which carrier covers a US–Mexico cross-border trip?
AT&T Mexico, because its AT&T Go prepaid eSIM includes unlimited calls and SMS in Mexico and the United States on one plan, and the carrier’s North America roaming is its clearest advantage over Telcel and Movistar. If your trip is longer or you want to avoid a Mexican registration entirely, a North America eSIM that covers both sides of the border is the cleaner buy.
More questions? See the complete FAQ →
Reference sources for this Mexico eSIM guide
- Every carrier-level number is taken from the Ookla Speedtest Connectivity Report for Mexico, July to December 2025 — the per-carrier report documents Telcel’s 73.1 Connectivity Score, 64.11 Speed Score and 90.5% Consistency, plus the AT&T, Movistar and ALTAN Redes figures.
- The national median mobile download of 46.39 Mbps for August 2026 and the global rank come from the Ookla Speedtest Global Index — the Mexico entry, refreshed monthly.
- Device-unlocking rules and the identity-registration framework are set out by the Instituto Federal de Telecomunicaciones (IFT) — the national regulator.
- The app-only eSIM packages and their MXN prices are published on AT&T Mexico — the AT&T Go prepaid eSIM page.
- Mexico’s per-gigabyte price is sourced from Cable.co.uk worldwide data pricing — the full country table. You will see the original dates on every source — judge recency for yourself.
Third-party measurements only. Actual results hinge on your device, its current band, and congestion on the nearest mast.
Pick up a Mexico eSIM before take-off
Skip the registration queue. Roami’s Mexico eSIM switches automatically between Telcel, AT&T and Movistar wherever you travel. Sample the networks with a free Mexico trial eSIM, then save 20% on Mexico eSIM plans with code WEB20.
One use per traveller
