How to get a Mexican cell phone plan or SIM card as an expat in 2026: which carriers, prepaid vs postpaid, porting your number, coverage in Mérida and Yucatán, and what to do when you first arrive.

Cell Phone Plans and SIM Cards in Mexico: What You Need to Know

Getting your phone situation sorted is one of the first practical tasks when you arrive in Mérida. The Mexican mobile market is different from what most North Americans and Europeans are used to — dominated by one giant carrier (Telcel), with a few meaningful alternatives. Here’s what actually works.

The Three Main Carriers

Telcel (América Móvil)

The dominant carrier. Telcel has by far the best coverage across Mexico — including rural Yucatán, small towns, and along highways. If network reliability matters to you (road trips to archaeological sites, travel outside Mérida), Telcel is the default choice.

Ownership: América Móvil (Carlos Slim). Part of the same group as Claro in other Latin American countries.

Why most expats use it: Coverage. Telcel has the most extensive 4G/LTE network in Mexico by a significant margin.

Downside: Generally more expensive than competitors.

AT&T México

The second major player. Good coverage in urban areas (Mérida city coverage is solid), less reliable in rural Yucatán. Often priced competitively against Telcel.

Note: AT&T México is a separate company from AT&T USA — your US AT&T plan doesn’t automatically mean you have service in Mexico (though some US AT&T plans include Mexico). AT&T México is a locally-branded carrier with its own plans.

Movistar (Telefónica)

Third option. Coverage is the weakest of the three outside major cities. Fine in Mérida proper, less reliable elsewhere in Yucatán.

MVNOs (Virtual Operators)

Several smaller carriers (like Oui, Unefon) use one of the major networks. Often cheaper but with the same network quality as their host carrier. Worth checking if price is your primary concern and you’re staying in Mérida.

Prepaid vs. Postpaid

Prepaid (Prepago)

The easiest way to get started immediately. Walk into any Telcel, AT&T, or Movistar store (or many convenience stores like OXXO), buy a SIM, and add credit.

How it works:

Buy a SIM card ($20–$50 MXN)
Add a recarga (top-up) at any OXXO, Walmart, or carrier store
Choose a plan (paquete) with your recharge — most include data + calls + texts

Telcel prepaid plans (2026 approximate):

$100 MXN/week: 3–5 GB data + unlimited calls/SMS within Mexico
$200 MXN/month: 10–15 GB + unlimited calls/SMS
$300–$400 MXN/month: 20–30 GB + streaming perks (Spotify, YouTube)

Plans change regularly — verify current offers at telcel.com or in-store.

Advantage: No contract, no credit check, start immediately. Disadvantage: You need to recharge before the plan expires or lose unused data.

Postpaid (Pospago)

A monthly contract plan, billed after use. Requires a Mexican RFC and often a credit history or deposit.

Who needs it:

You want a higher data allowance
You want a device financing plan (buying a phone on installments)
You plan to stay long-term and want the convenience of automatic billing

What it typically requires:

Mexican ID (or passport + residency card)
RFC (tax ID)
Bank account for direct debit
Sometimes a deposit

Telcel postpaid plans (2026 approximate):

$300–$400 MXN/month: 20–30 GB + unlimited national calls
$500–$700 MXN/month: 50+ GB + international inclusions + premium perks

What to Do When You First Arrive

Day 1–2: Use your home country plan’s international roaming (most US/Canadian carriers now include Mexico in their plans). T-Mobile US, for example, includes unlimited data (at slower speeds) and texts in Mexico at no extra charge. This gets you connectivity immediately while you sort out a local SIM.

Week 1: Get a Telcel prepaid SIM. You can do this at:

Any Telcel store (several in Mérida — Plaza Las Américas, Liverpool locations, standalone stores)
OXXO convenience stores sell SIMs but with limited support
Walmart and Sam’s Club carry SIMs

What you need at the store: Your passport. That’s it for prepaid. No other documentation required.

Getting your SIM activated: The store will activate it for you. The whole process takes 10–20 minutes.

US/Canadian Plans That Include Mexico

Many North American plans already include Mexico service:

T-Mobile US: All plans include unlimited texting and data (slower speeds at no charge; high-speed data usually a day pass add-on) in Mexico and Canada. Many T-Mobile customers use their US plan in Mexico without getting a Mexican SIM.

AT&T US: International Day Pass or Mexico/Canada add-ons available. Check your specific plan.

Verizon US: International plans available; generally more expensive than T-Mobile’s Mexico inclusion.

Canadian carriers: Rogers, Bell, Telus offer international add-ons; TravelPass-style day rates apply. More expensive than US carriers for Mexico.

The consideration: Using your US/Canadian plan in Mexico is convenient and avoids the local SIM hassle. But you’re paying US/Canadian prices and may have data limitations. For long-term residents, a local Mexican plan is usually better value.

Keeping Your US/Canadian Number While Using a Mexican SIM

Many expats run two SIMs — a US/Canadian number that family calls (preserved with a cheap monthly plan or eSIM) and a Mexican number for local use:

Options to preserve your US number:

Google Voice: Port your US number to Google Voice ($20 one-time), then use it via WiFi/data anywhere
Cheap US carrier: Mint Mobile or similar, minimal monthly plan just to keep the number active
eSIM: If your phone supports dual SIM or eSIM, run both numbers simultaneously — your US number and a Mexican Telcel SIM

eSIM: The Modern Option

Many modern smartphones (iPhone 14+, recent Samsung, Google Pixel) support eSIM — a digital SIM that doesn’t require a physical card.

Telcel offers eSIM for postpaid plans. Some virtual carriers (Airalo, Holafly) sell data-only Mexico eSIMs useful for tourists and part-time residents.

If you’re arriving for the first time, an eSIM data plan for your first week buys time to sort out a permanent solution.

Coverage in Mérida and Yucatán

Mérida city: All three major carriers (Telcel, AT&T, Movistar) have 4G LTE coverage throughout the urban area. Telcel and AT&T are both solid in the city.

Yucatán coast (Progreso, Sisal, Celestún): Telcel has the best coverage; others are variable.

Interior towns and archaeological sites: Telcel is essential here. AT&T is hit-or-miss in Chichén Itzá, Uxmal, and small towns. Movistar often has no service outside urban areas.

Cenotes and jungle: Variable. Expect gaps; download offline maps (Google Maps offline download) before visiting remote sites.

Practical Tips

Buy at a Telcel store, not just OXXO. OXXO sells SIMs but the staff training is limited. A dedicated Telcel store or kiosk activates the SIM properly and can help troubleshoot.

APN settings: If your phone is unlocked and you’re installing a new SIM, you may need to manually set the APN (Access Point Name) for data to work. Ask at the store — they’ll configure it.

Unlocked phone: Make sure your phone is unlocked (not carrier-locked to your home carrier) before arriving. Most modern phones sold in the US/Canada after 2023 unlock automatically after a period or upon request.

OXXO recharges: Once you have a plan, you can recharge at any OXXO by giving the cashier your phone number. Fast and available 24/7 throughout Mérida.

Internet connectivity in Mérida → Moving to Mérida checklist → Cost of living in Mérida → Talk to an advisor →

Carrier plans, pricing, and coverage change frequently. Verify current plans directly at carrier websites or stores. Information reflects Mexican mobile market conditions as of mid-2026.