Mexico 20GB 30 days
Telcel / AT&T
- Data
- 20GB
- Validity
- 30 days
- Hotspot
- Yes
- Technology
- 3G / 4G / 5G
- 5G ready
- Hotspot
- Top-up ready
Validity starts on first connection at the destination
from$39.90$37.90
AT&T México and travel eSIM in Mexico
AT&T México is one of the networks your eSIM may use in Mexico. Here is who actually decides which network you get, and what to do with that.
Author: Bob Kanokphon Thongdee · Co-founderReviewed by: Porsch Kunnipat SiramanakulPublished: October 12, 2026Last updated: October 12, 2026
Quick answer
- 15 of the 49 Mexico plans we sell name AT&T México as a reachable network, at 5G.
- AT&T México runs LTE on B4, B66; your phone needs at least one of them.
- Travel plans connect by roaming, so no plan can promise one specific network.
AT&T México in brief
AT&T México's online coverage map lets you view 3G, 4G and 5G coverage separately.
We are not a reseller for this operator and we have not run our own field speed tests. The band and network details below come from the sources listed at the end of the page.
AT&T México's bands and technology
| Item | AT&T México |
|---|---|
| LTE (4G) | B4, B66 |
| 5G NR | Not verified |
| 5G launched | Live |
| 3G | Still running |
| Network code (MCC-MNC) | 334-050 |
Checked against the sources on 2026-10-12. Only the bands a source confirmed are listed; the network may run others too.
An eSIM can only use AT&T México if your phone supports at least one band in this table. Before you fly, open your model's spec page on the maker's site and compare its LTE and 5G band lists.
AT&T México's coverage map
AT&T México publishes its own coverage map. Look up the street or district you will stay in rather than the country as a whole, because coverage in town and out of town differs a great deal. The map shows AT&T México's own network; a roaming plan may not get every technology it shows.
The plans on our shelf that name AT&T México
From the supplier record behind each package, 15 of the 49 plans we currently sell for Mexico declare AT&T México as a network the profile can reach, at 5G. The figure comes from the same catalogue that prices the plan pages, and it moves when the supplier revises the record.
A plan naming AT&T México means the network sits in the list the profile may choose from. It does not mean your handset will stay on it. The priority order is the supplier's, and the signal where you stand decides.
AT&T México beside the other networks in Mexico
| Network | LTE bands | 5G bands |
|---|---|---|
| AT&T México | B4, B66 | Not verified |
| Movistar México | Not verified | n7 |
| Telcel | B4, B66 | n78 |
A band shared across networks is one a single phone can use on all of them.
Why plans do not name a fixed network
Nearly every travel eSIM is a roaming product: the profile picks a network by an order the supplier sets, not by the buyer. If AT&T México is weak where you are, try selecting Movistar México or Telcel manually in the network settings, and keep data roaming on for the eSIM profile.
FAQ
Will my eSIM definitely connect to AT&T México?+
15 of our plans name AT&T México as reachable, but that is not a guarantee. Travel plans run over roaming agreements, so the network depends on the supplier behind the plan, your device and where you are.
Which bands does my phone need for AT&T México?+
At least one of these, LTE: B4, B66. Your phone's band list is on the maker's spec page for your model, under "Cellular" or "Network".
Does AT&T México run 5G, and will my plan get it?+
Yes. AT&T México has run commercial 5G. A travel plan only gets it when the plan permits 5G, your phone supports one of those bands, and you are inside 5G coverage. Miss any one and you fall back to 4G.
How do I see which network I am on?+
Check the carrier name at the top of the screen, or open the mobile-network settings and look at the operator list. If signal is poor, try selecting a network manually instead of automatic, but only one your plan actually supports.
Sources
- List of LTE networks (Wikipedia) — Wikipedia, October 11, 2026
- List of 5G NR networks (Wikipedia) — Wikipedia, October 11, 2026
- Cobertura | AT&T México — AT&T México, October 11, 2026
- AT&T México homepage — AT&T México, October 12, 2026
- MNC list ITU region 3xx (North America) — Wikipedia, October 12, 2026
About the author
Bob Kanokphon Thongdee
- Co-founder of eSIMonline.asia
- More than 7 years in online marketing
- Founder of Cojourney Visa and Cojourney Travel
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