Does AT&T work in Mexico?

AT&T coverage in Mexico: Networks and 5G availability

Whether you’re vacationing for a few days, visiting family for several weeks, or making a permanent move to Mexico from the US, you can typically expect uninterrupted LTE coverage in most areas and 5G service in many areas because AT&T owns its own network there (AT&T Mexico). As of 2026, AT&T Mexico has been expanding its 5G coverage in major business corridors, cities, and tourist areas, including Mexico City (CDMX), Cancún, and Cabo.

While generally reliable in more populated regions, internet service in Mexico can be spotty outside major tourist hubs. In such cases, AT&T customers will still usually receive high-quality roaming in Mexico through the company’s partnerships with local providers such as Telcel or Movistar. Telcel is widely considered one of the strongest overall networks for coverage in Mexico, including in remote and rural areas, which can be particularly useful if you’re looking to visit the jungles, cenotes,  and archaeological zones that make the country so unique. 

💡 Pro tip: If you have a weak signal, you might try manually switching to another available network in your phone’s settings. Switching from 5G to LTE may also provide a more stable connection while roaming in certain areas.

Do US phones work in Mexico?

Whether your phone will work in Mexico depends mostly on your carrier and roaming agreements, but it’s still a good idea to verify that your model supports roaming in Mexico, too. Popular phones that typically work well in Mexico include:

• iPhone 12 and later (most iPhone 11 support LTE, not 5G).

• Samsung Galaxy S21 and newer.

• Samsung Galaxy Z Fold 3 and Flip 3.

• Google Pixel 6 and newer.

• OnePlus 11 and newer.

• Motorola Edge 50 series.

• Xiaomi 14 global models.

If you have an older phone, you may want to check its compatibility via your provider. You can look up the model number of your phone in your device settings and check the manufacturer’s website to confirm that it supports roaming and the necessary LTE or 5G bands for travel in Mexico.

AT&T plans in Mexico: What’s included?

So will your AT&T plan work in Mexico? In a word, probably. Your 5G roaming may work in Mexico, but it can still vary by timing, location, and which local network is in range. Here’s a brief overview of AT&T coverage in Mexico:

• Unlimited Premium 2.0 and PL. These AT&T plans are best for international roaming in Mexico due to higher-priority data and larger allowances. Both allow unlimited talk, text, and data in Mexico, the US, and Canada. Unlimited Premium 2.0 also offers coverage in 20 other countries in Latin America, doubles the hotspot allowance to 100 GB (compared to 60 GB for PL), and offers 50% off connected device plans. The main difference is that Premium 2.0 costs more than PL due to wider coverage and additional benefits, while PL is more cost-effective if you don’t need service outside Mexico, the US, and Canada, or extra hotspot data.

• Unlimited Extra EL and Starter SL. These Unlimited plans also include coverage in Mexico at no extra charge. However, unlike Premium 2.0 and PL, these plans have lower network priority during periods of high network traffic, so speeds may slow after your data cap is reached. They provide less premium data and smaller hotspot allowances than the Premium options, making them better suited for lighter data users who still want Mexico coverage but don’t need the high caps or priority data. 

• International Day Pass. For plans lacking the “Roam North America” feature, such as legacy or 4 GB plans, the International Day Pass might be required for coverage in Mexico. It costs US$12 per day for the first line and US$6 per day for additional lines, charging only for the days you use the service. Day Pass users are restricted to their plan’s usual high-speed data allowance — unlike Unlimited plans — and may experience slower speeds if they exceed it. The Day Pass is ideal for infrequent travelers or those not on eligible Unlimited plans who need temporary coverage in Mexico. 

Choosing the right option ultimately comes down to individual data needs and travel habits. The table below breaks down the main differences between the Unlimited Premium 2.0 and Unlimited Starter SL plans at a glance:

Does AT&T prepaid work in Mexico? 

Some prepaid Unlimited plans allow calling between the US, Mexico, and Canada at no extra cost. However, there are caveats. For example, like certain other plans, high-speed data may be capped, and you’ll need to wait until it’s lifted. Additionally, hotspot availability can vary by prepaid plan. Data speeds may be slower in some places, and older or lower-tier plans might have reduced roaming access, too.  

How to avoid unexpected charges in Mexico

Most surprises on wireless bills stem from roaming misunderstandings or older plans. Before you go, check if your plan covers 5G roaming in Mexico and if high-speed data limits apply. Here are a few ways to avoid fees while traveling in Mexico:

• Set your phone to low data mode. You can do so before you arrive to minimize background app data use and avoid extra charges. 

• Keep up with your data use. Even premium Unlimited plans can come with catches, such as network management policies that give priority access based on tower congestion. Your plan may also have caps on high-speed hotspot tethering, or you may experience speed drops in some areas. 

• Manually select your network while you’re in Mexico. While AT&T offers pretty comprehensive coverage, your phone may still connect to a network that isn’t included in your unlimited data package, depending on location. For example, if you’re boating, your phone may connect to a maritime network, notorious for inflated data charges. You may consider setting a notification to alert you when your phone switches networks, or disable network roaming altogether until you’re ready to use it. 

• Download what you can before you leave. You can download and save maps, translation resources, travel passes, and attraction tickets in advance. You might also want to download and save entertainment media to avoid paying for streaming while you roam. 

• Use public Wi-Fi. Free, public internet is commonly available in populated areas, such as cities, tourist-heavy destinations, and airports. However, it’s worth noting that cybercrime can occur anywhere with unsecured Wi-Fi, whether the area in Mexico is safe or not. Avoid using public Wi-Fi for online banking or working with other sensitive information without protection. 

• Buy a local SIM card. Travelers with an unlocked phone can easily pick up a physical SIM card while in Mexico. Because the overall cost of living in Mexico is lower, these local SIMs are highly affordable and often much cheaper than relying on standard roaming plans.

• Consider an eSIM plan. If your phone is eSIM compatible and unlocked, you can avoid spending money on expensive roaming charges by using an eSIM. You can install the Saily app and select a Mexican eSIM data plan before you leave home, then have it activated automatically upon arrival for instant, secure access. While you’re exploring the country, you can buy more data or upgrade your plan in the app if needed.

Takeaways

AT&T works in Mexico with most Unlimited plans, offering coverage via AT&T Mexico, Telcel, or Movistar, depending on agreements and location. However, even with Unlimited plans, you may still see reduced speeds or limited hotspot access when roaming. For trips to Mexico, consider eSIM options like Saily — download the app, pick a plan, and connect instantly when you land to avoid surprise charges and enjoy your trip abroad.

Note: If you have Verizon, visit “Does Verizon work in Mexico?” for the answer.