Best eSIM for Cancún 2026: 5 Plans for the Riviera Maya, Tulum & Cenotes
The best eSIM for Cancún and the Riviera Maya, compared. Get Telcel-class coverage, real pricing, and the right plan for Tulum, cenotes, and Chichén Itzá trips.
Resort Wi-Fi in Cancún and the Riviera Maya is paywalled, throttled, and shared with a thousand other guests — and most US carriers still start billing roaming the moment you cross into Mexico. The best eSIM for Cancún is Saily . It runs on Telcel-class coverage — the only network with truly wide reach down the Caribbean coast — at the lowest per-GB price, so you land at Cancún International Airport (CUN) already connected. For the most flexibility and carrier choice, Airalo is the best all-rounder.
Here is the friction fact that decides everything: in Cancún, you need working data the instant you step off the plane. That is when you book an Uber (which operates in Cancún and Playa del Carmen), find your ADO bus to Playa or Tulum, flag a colectivo shared van down Highway 307, or message the shuttle driver your resort was supposed to send. Then, for the rest of the trip, Telcel’s network is what keeps you connected on day trips to Tulum, Chichén Itzá, Cobá, and the cenotes — places where the free hotel Wi-Fi you paid a premium for simply does not follow you.
This is a city and coast guide — a focused companion to our broader best eSIM for Mexico roundup. If your trip is all about the Caribbean resort corridor, the Riviera Maya, and the Yucatán day trips, this is the page for you.
Quick VPN note: Mexico does not censor the internet, so you do not need a VPN for access. But you will lean on paywalled, shared resort and beach-cafe Wi-Fi constantly, and a VPN encrypts that traffic so your logins and card details are not exposed on a network anyone in the lobby can join. It also lets you stream your home Netflix, Hulu, or sports library from your sun lounger instead of the Mexico catalog. We recommend NordVPN (our review) or Surfshark (our review) — see our best VPN for Mexico guide for the full breakdown.
For unlimited data so you can upload beach and cenote content all day without watching a counter, Holafly is the pick. For the cheapest daily rates on a short resort stay, Trip.com daily plans win. And if you are new to eSIMs and want to test one risk-free, Nomad eSIM offers a free trial.
Here is every provider worth buying for Cancún, with realistic speed expectations, honest pricing, and exactly which plan to get.
Quick Picks: Best eSIM for Cancún at a Glance
🏆 Quick Picks
Saily
Telcel-class coverage down the whole Riviera Maya, lowest per-GB pricing, clean app
From $3.99/1GB
Airalo
200+ countries, carrier flexibility, trusted by 20M+ users — great if Cancún is one stop of many
From ~$4.50/1GB
Holafly
True unlimited data — ideal for uploading beach and cenote photos and video all day
From $19/5 days
Trip.com
Ultra-cheap daily plans, perfect for a short all-inclusive resort stay
From ~$1.50-3/day
1. Saily — Best Value eSIM for Cancún
Network: Telcel-class coverage | Starting Price: $3.99/1GB | Unlimited Data: No | 5G: Where available | Tethering: Yes
Saily connects to Telcel-class coverage — and in the Yucatán, that is the whole game. Telcel holds roughly 60% of the Mexican market and is the only carrier with continuous reach along the Caribbean coast: through the Cancún Hotel Zone, down Highway 307 past Puerto Morelos, Playa del Carmen, Akumal, and Tulum, and inland on the road to Chichén Itzá. Built by Nord Security (the company behind NordVPN), Saily pairs that coverage with the lowest per-GB pricing on this list. For the full rundown, read our Saily review.
Cancún Plan Pricing
Prices are approximate and shift with promotions — always check the current rate at checkout.
| Plan | Data | Validity | Approx. Price |
|---|---|---|---|
| Starter | 1 GB | 7 days | ~$3.99 |
| Basic | 3 GB | 30 days | ~$10.99 |
| Standard | 5 GB | 30 days | ~$13.99 |
| Plus | 10 GB | 30 days | ~$22.99 |
| Premium | 20 GB | 30 days | ~$36.99 |
For a typical one-week Cancún and Riviera Maya trip — Uber and ADO navigation, WhatsApp for tours and restaurants, Google Maps for cenote and ruin day trips, plus steady Instagram and photo backups — the 3GB or 5GB plan is the sweet spot. Couples who share a hotspot, or anyone posting Reels and video daily, should size up to 10GB, or jump to unlimited with Holafly below.
What Speeds to Expect
Saily rides Telcel’s LTE network, so real-world performance tracks the carrier itself. Based on Telcel’s coverage in the region, here is what is realistic:
- Cancún Hotel Zone (Zona Hotelera): expect roughly 40-65 Mbps on 4G LTE — plenty for video calls, uploads, and streaming poolside.
- Cancún downtown & airport (CUN): typically 35-55 Mbps, strong enough to book your ride and pull up directions before you leave the terminal.
- Playa del Carmen & Riviera Maya coast: generally 30-50 Mbps along the developed corridor and in town centers.
- Tulum town & ruins: around 25-45 Mbps — reliable, though it can dip during peak visitor hours.
- Cenotes & inland jungle: highly variable; 5-20 Mbps near highway-side cenotes, dropping to no signal deep in cavern systems.
Telcel 5G is live in parts of Cancún and Playa del Carmen, but travel-eSIM access to it is inconsistent — treat any 5G as a bonus, not a guarantee, and plan around dependable LTE.
Who Should Choose Saily
Saily is the right pick for most Cancún travelers — the classic seven-day resort-plus-day-trips itinerary, a Riviera Maya road trip, or a Playa del Carmen digital-nomad stint. Telcel-class coverage, tethering support, a clean usage app, and the lowest per-GB pricing make it the default recommendation.
Not ideal for: Travelers who refuse to track data at all (choose Holafly), or anyone who wants carrier choice for a multi-country trip (choose Airalo).
Get Saily Cancún eSIM →2. Airalo — Best Overall eSIM for Cancún
Network: Telcel & other Mexican operators | Starting Price: ~$4.50/1GB | Unlimited: No | 5G: Where available | Tethering: Yes
Airalo is the world’s largest eSIM marketplace, trusted by over 20 million users. Its edge for Cancún is flexibility: Airalo lets you compare Mexico plans and operator options in one polished app, and — crucially — it covers 200+ countries on the same account. That makes it the smartest choice if Cancún is just one leg of a bigger trip, say a Caribbean island hop or a Yucatán-to-Belize crossing.
Why Airalo for Cancún
- Marketplace model: Compare Mexico data plans and operators before you commit.
- Multi-trip friendly: One app for Cancún plus the rest of your route — see our best eSIM for the Caribbean and best eSIM for Central America guides if you are combining destinations.
- Expected speeds: On Telcel-class coverage, expect the same 40-65 Mbps in the Hotel Zone and 30-50 Mbps down the Riviera Maya that any strong LTE connection delivers.
- Setup: Polished app, three-to-five-minute activation, QR or direct install.
- Support: 24/7 in-app chat.
Who It’s For
Airalo suits travelers who want maximum choice and one app for everything. If you are flying into Cancún but continuing to Cozumel, Belize, or another country, Airalo’s single-account coverage removes the hassle of buying a fresh eSIM for each stop. Read our full Airalo review for a deeper look.
Get Airalo Cancún eSIM →3. Holafly — Best Unlimited Data for Cancún
Network: Mexican local carriers | Starting Price: $19/5 days | Unlimited: Yes | 5G: No | Tethering: Limited
Cancún is a place where data usage spikes without warning. A single day can burn several gigabytes: Uber and Google Maps running through gridlocked Hotel Zone traffic, Google Translate on menus, a couple of hours of poolside streaming, and — the real culprit — uploading a day’s worth of drone-clear cenote video, beach Reels, and Chichén Itzá photos. Holafly ’s unlimited Cancún plan kills the anxiety entirely, which is exactly why content creators and heavy uploaders love it.
Unlimited Cancún Plan Pricing
Approximate; confirm current rates at checkout.
| Plan | Data | Validity | Approx. Price |
|---|---|---|---|
| Short Trip | Unlimited | 5 days | ~$19 |
| Week | Unlimited | 7 days | ~$27 |
| Extended | Unlimited | 10 days | ~$34 |
| Two Weeks | Unlimited | 15 days | ~$47 |
| Long Stay | Unlimited | 30 days | ~$64-69 |
The 7-day plan at roughly $27 fits the standard Cancún vacation perfectly — unlimited data for under $4 a day. Add a few extra days for a longer Riviera Maya road trip with the 10- or 15-day plan.
The Trade-offs
Unlimited data usually runs a little slower than capped plans — expect comfortable 25-45 Mbps in the resort corridor, which is more than enough for uploads, streaming, and video calls. The bigger caveat is tethering: Holafly limits hotspot sharing (typically around 500MB/day) on unlimited plans, so if you need to power a laptop for remote work, choose Saily or Airalo instead.
Who Should Choose Holafly
Holafly is for content creators documenting the Riviera Maya, remote workers on their phone in Playa del Carmen cafes, and anyone who point-blank refuses to count gigabytes on vacation. Read our full Holafly review for more.
Get Holafly Unlimited Cancún eSIM →4. Trip.com — Cheapest Daily Rates for Cancún
Network: Mexican local carriers | Starting Price: ~$1.50-3/day | Unlimited: Daily cap plans | 5G: No | Tethering: Varies
Trip.com offers some of the cheapest daily rates for Mexico. Its daily-reset model gives you a fixed allowance (typically 500MB-1GB) each day, refreshing at midnight — ideal for a short all-inclusive stay where the resort covers most of your needs and you only need mobile data for excursions, ferries, and rides.
Why Trip.com for Cancún
- Ultra-affordable: Daily plans from roughly $1.50-3/day — often the cheapest option for stays under a week.
- Daily reset: A fresh allowance each day instead of one shared pool.
- Bundle potential: If you are already booking Cancún flights or resorts through Trip.com, adding an eSIM is effortless.
- Expected speeds: Solid Telcel-class LTE in the Hotel Zone and Playa del Carmen.
Who Should Choose Trip.com
Trip.com is the pick for budget travelers on short all-inclusive stays who lean on resort Wi-Fi and only need mobile data for day trips and transport. Not ideal for heavy uploaders or anyone spending long stretches off-resort — if you need more than 1GB most days, Saily or Holafly serve you better.
Get Trip.com Cancún eSIM →5. Nomad eSIM — Best Free Trial for Cancún
Network: Mexican local carriers | Starting Price: Free trial available | Unlimited: No | 5G: No | Tethering: Yes
Nomad eSIM stands out for its free trial eSIM — a genuine risk-reducer if you have never used an eSIM and want to confirm it works before your first international trip. Install the trial ahead of time, verify your phone connects to a Mexican network on arrival at CUN, then upgrade to a paid plan with confidence.
Why Nomad eSIM for Cancún
- Free trial: Test connectivity at no cost before committing.
- Simple app: Clean interface focused on easy activation.
- Competitive plans: Mid-range paid buckets from 1GB upward with tethering.
- Good backup: Keep the trial installed alongside your main eSIM as a fallback.
Who Should Choose Nomad eSIM
Nomad is for first-time eSIM users and travelers who want a backup connection. It is not the cheapest per GB or the fastest, but the free trial makes it the lowest-risk way to try the technology on a Cancún trip.
Try Nomad eSIM Free →Cancún eSIM Comparison Table
Every provider worth buying for Cancún, side by side.
| Feature | Saily | Airalo | Holafly | Trip.com | Nomad eSIM |
|---|---|---|---|---|---|
| Network | Telcel-class coverage | Telcel & other operators | Mexican local carriers | Mexican local carriers | Mexican local carriers |
| Starting Price | $3.99/1GB | ~$4.50/1GB | $19/5 days | ~$1.50-3/day | Free trial |
| Unlimited Option | No | No | Yes | Daily cap plans | No |
| 5G Support | Where available | Where available | No | No | No |
| Tethering | Yes | Yes | Limited | Varies | Yes |
| Typical Speed (Hotel Zone) | 40-65 Mbps | 40-65 Mbps | 25-45 Mbps | 30-50 Mbps | 30-45 Mbps |
| Best For | Best value per GB | Flexibility & multi-country | Content creators & heavy users | Budget short resort stays | First-time eSIM users |
| Rating | 4.5/5 | 4.4/5 | 4.3/5 | 4.2/5 | 4.1/5 |
| Visit Saily | Visit Airalo | Visit Holafly | Visit Trip.com | Visit Nomad eSIM |
How to Choose the Right Cancún eSIM
By Trip Type
All-inclusive resort stay (3-5 days): Trip.com’s daily plans or Saily’s 1-3GB plan. You will mostly ride the resort Wi-Fi and only need mobile data for excursions, the airport, and rides. Budget 500MB-1GB per day.
Classic Cancún + Riviera Maya trip (7 days): Saily’s 3-5GB plan is the sweet spot for Uber, ADO buses, day trips to Tulum and Chichén Itzá, and steady photo uploads. Heavy Instagram users should size up or go unlimited.
Content-creator or influencer trip: Holafly unlimited. Uploading cenote video, drone-style beach clips, and daily Reels burns data faster than anything else on this coast.
Digital-nomad stint in Playa del Carmen (2-4 weeks): Holafly’s 30-day unlimited plan for phone-based work, or Saily’s 20GB plan if you have reliable coworking Wi-Fi and just need a solid backup.
Cancún as one stop of many: Airalo, for single-account coverage across the Caribbean or Central America.
By Budget
| Budget Level | Best Pick | Approx. Trip Cost | Why |
|---|---|---|---|
| Ultra-budget | Trip.com | $8-18 | Cheapest daily rates |
| Value | Saily | $11-23 | Best per-GB pricing |
| Flexible | Airalo | $12-27 | Carrier & country choice |
| Unlimited | Holafly | $19-47 | No data limits, best for uploads |
Cancún & Riviera Maya Coverage Tips by Location
Cancún Hotel Zone & Airport (CUN)
The Zona Hotelera — the long barrier-island strip of resorts — has the region’s best coverage, typically 40-65 Mbps on Telcel LTE. That matters because resort Wi-Fi here is notoriously tiered and paywalled: a slow “free” tier meant for email, and a paid premium tier for streaming, shared across the whole property. Your eSIM sidesteps all of it. At the airport, get your eSIM line active before you deplane so you can arrange your ride immediately.
Uber tip: Uber works in Cancún, but pickups directly at CUN airport have long been a flashpoint with local taxi unions and can be restricted or awkward. For the airport leg specifically, a pre-booked shuttle or the official ADO bus is often smoother; use Uber freely once you are in the city or Playa del Carmen.
Playa del Carmen & the Highway 307 Corridor
Playa del Carmen — the Riviera Maya’s hub and a digital-nomad favorite — has strong Telcel coverage throughout town, generally 30-50 Mbps. The Highway 307 corridor connecting Cancún, Puerto Morelos, Playa, Akumal, and Tulum stays well covered, so colectivos and rental-car drives keep signal the whole way.
Tulum
Tulum town and the beachfront hotel zone have reliable Telcel service, around 25-45 Mbps, though the beach road can get congested at peak times. The Tulum archaeological site has usable coverage near the entrance. Tulum’s eco-conscious grid can be patchy in spots, so an eSIM on Telcel is more dependable than many small-hotel Wi-Fi setups.
Chichén Itzá, Cobá & the Cenotes
Day trips inland are where coverage gets interesting. Chichén Itzá and Cobá have workable signal near entrances, parking, and the surrounding towns (Pisté, near Chichén Itzá, is covered), but it can fade among the ruins themselves. Cenotes are the real weak spot: open, highway-adjacent swimming cenotes usually hold a signal, but deep cavern systems and remote jungle cenotes drop out entirely — and nothing works underwater. Always download offline Google Maps for your day-trip route before you leave the coast.
Cozumel & Isla Mujeres
Both islands are covered by Telcel. Cozumel (a short ferry from Playa del Carmen) has good coverage in San Miguel town and along the developed west coast, thinning on the wild eastern side. Isla Mujeres (ferry from Cancún) is well covered across its small footprint. As always, your eSIM will not work while you are actually diving or snorkeling — upload your footage back on shore.
US Carrier Roaming vs. an eSIM in Cancún
Before you assume your US plan has you covered, check the fine print — this is the single biggest way travelers overpay in Cancún:
- T-Mobile: Many Magenta and Go5G plans include data in Mexico and Canada, often at reduced (2G/3G-like) speeds after a high-speed cap. Light users may genuinely be fine, but the throttled speed is frustrating for maps and uploads. An eSIM restores full LTE.
- AT&T & Verizon: Typically charge an International Day Pass of roughly $10-12 per day unless you are on a specific premium plan. On a seven-day trip that is $70-84 — far more than a $10-20 eSIM for the whole visit.
- The eSIM math: For the price of one or two carrier day passes, an eSIM covers your entire Cancún trip at full LTE speed, and you keep your home number active on your regular line for calls and 2FA.
The verdict: T-Mobile customers on a short, light trip can sometimes skip the eSIM; almost everyone else saves real money with one.
VPN Considerations for Cancún
You do not need a VPN to access the internet in Mexico — nothing is censored. But two situations make one worth having:
Public and resort Wi-Fi security: You will connect to a lot of shared networks — resort lobbies, beach clubs, Playa del Carmen cafes, the airport. A VPN encrypts that traffic so your banking logins and card details are safe on networks strangers can join. NordVPN and Surfshark are both excellent for this.
Streaming your home library: From Cancún, Netflix, Hulu, and many sports services show the Mexican catalog. A VPN lets you connect to a home-country server and watch your usual library from the beach. See our best VPN for Mexico guide for setup and server recommendations.
Running a VPN adds roughly 5-15% to data usage, so factor that in on a capped plan — another point in favor of Holafly unlimited if you plan to keep a VPN on all day.
eSIM vs. Local Telcel SIM in Cancún
When an eSIM Wins
Trips under three weeks: Install before you fly and you are connected at CUN the moment you land — no store visit, no passport registration, no fumbling with a tiny SIM tray over a hotel sink.
Keeping your home number: Dual SIM means your physical line stays live for WhatsApp, banking 2FA, and airline notifications while your eSIM handles data.
When a Local SIM Wins
Stays over a month: A local Telcel Amigo prepaid plan (around 6GB for roughly $11 USD, with top-ups sold at any OXXO convenience store) is cheaper for heavy, long-term use and gives you a Mexican phone number.
Needing a Mexican number: Some local delivery and rideshare verifications prefer a local number for SMS. Tourist eSIMs are data-only.
Essential Cancún & Riviera Maya Travel Apps
Reliable data makes these indispensable:
- Uber — The safe, fixed-price way around Cancún and Playa del Carmen (mind the airport-pickup restrictions).
- ADO — Book the reliable intercity buses from Cancún airport to Playa del Carmen and Tulum in advance.
- Google Maps — Download offline maps for Cancún, Tulum, Chichén Itzá, and your cenote routes before day trips.
- WhatsApp — How every tour operator, restaurant, driver, and small hotel on the coast communicates.
- Google Translate — Offline Spanish pack for menus, markets, and directions.
- XE Currency — The peso moves; keep exchange rates handy for markets and taxis.
Our Verdict
For the Cancún resort corridor and the Riviera Maya, here are the definitive picks:
Best value: Saily — Telcel-class coverage that actually reaches down Highway 307 to Playa del Carmen and Tulum, the lowest per-GB price, tethering, and a clean app. The default choice for most travelers.
Best overall: Airalo — Marketplace flexibility and 200+ country coverage, ideal if Cancún is one stop on a bigger route.
Best unlimited data: Holafly — No limits, perfect for uploading beach and cenote content all day.
Cheapest daily rates: Trip.com — Rock-bottom daily plans for short all-inclusive stays.
VPN reminder: Pair your eSIM with NordVPN or Surfshark to secure resort Wi-Fi and stream your home library — details in our best VPN for Mexico guide.
Whichever you pick, install it before your flight. You will step off the plane at CUN already connected — ready to book your ride, catch your ADO bus, and start the trip without hunting for a Wi-Fi password.
For the full national picture, see our best eSIM for Mexico guide. Combining Cancún with island-hopping or a border crossing? Check our best eSIM for the Caribbean and best eSIM for Central America roundups. And do not forget travel medical cover — a great trip can still go sideways, so read our best travel insurance for Mexico guide before you go.
Frequently Asked Questions
Do eSIMs work in Cancún and the Riviera Maya?
Yes. Cancún, the Hotel Zone, Playa del Carmen, and Tulum all have strong Telcel 4G LTE coverage, and most travel eSIMs connect to Telcel. Expect roughly 40-65 Mbps in the Cancún Hotel Zone and 30-50 Mbps along the Riviera Maya coast. Signal thins out at remote jungle cenotes and archaeological sites, but every major resort area and town is well covered.
Which eSIM has the best coverage in Cancún?
Any eSIM that runs on Telcel. Telcel holds roughly 60% of the Mexican market and has by far the widest coverage down the Caribbean coast — the only network you can rely on continuously along Highway 307 through Puerto Morelos, Playa del Carmen, Akumal, and Tulum, and inland toward Chichén Itzá. Saily and Airalo both connect to Telcel-class coverage, which is why they top this list.
How much does a Cancún eSIM cost?
Capped-data plans start at approximately $3.99 for 1GB/7 days with Saily, with 5GB/30 days around $14. Holafly unlimited starts at approximately $19 for 5 days. Trip.com daily plans run about $1.50-3 per day. For a typical one-week Cancún and Riviera Maya trip, budget roughly $10-20 for capped data or $27-47 for unlimited.
Do I need a VPN in Cancún?
Not for access — Mexico does not censor the internet. But a VPN is genuinely useful here for two reasons: it secures your traffic on the paywalled, shared resort and cafe Wi-Fi you will use constantly, and it lets you stream your home Netflix, Hulu, or sports library from the beach. We recommend NordVPN or Surfshark. See our best VPN for Mexico guide.
Will my eSIM work at Chichén Itzá, Tulum, and the cenotes?
Mostly yes, with caveats. Tulum town and the Tulum ruins have solid Telcel coverage. Chichén Itzá and Cobá have usable signal near the entrances and parking areas. Cenotes are the weak spot: open swimming cenotes near the highway usually get signal, but deep cavern and jungle cenotes (and anything underwater) will drop out. Download offline maps before day trips.
Should I just use my US carrier’s roaming instead?
It depends on your carrier. Many T-Mobile Magenta plans bundle Mexico data (often at reduced speeds after a cap), so light users may be fine. AT&T and Verizon typically charge an international day pass of about $10-12 per day unless you are on a specific plan — that adds up fast on a week-long trip. An eSIM at $10-20 for the whole trip is usually cheaper and faster.
Is it better to get an eSIM or a local Telcel SIM in Cancún?
For trips under three weeks, an eSIM wins on convenience: instant activation before you fly, no passport registration, and no hunting for an OXXO or Telcel store. For stays over a month with heavy data use, a local Telcel Amigo prepaid plan (around 6GB for roughly $11 USD, top-ups at any OXXO) can be cheaper and gives you a Mexican number.
Frequently Asked Questions
Do eSIMs work in Cancún and the Riviera Maya?
Yes. Cancún, the Hotel Zone, Playa del Carmen, and Tulum all have strong Telcel 4G LTE coverage, and most travel eSIMs connect to Telcel. Expect roughly 40-65 Mbps in the Cancún Hotel Zone and 30-50 Mbps along the Riviera Maya coast. Signal thins out at remote jungle cenotes and archaeological sites, but every major resort area and town is well covered.
Which eSIM has the best coverage in Cancún?
Any eSIM that runs on Telcel. Telcel holds roughly 60% of the Mexican market and has by far the widest coverage down the Caribbean coast — the only network you can rely on continuously along Highway 307 through Puerto Morelos, Playa del Carmen, Akumal, and Tulum, and inland toward Chichén Itzá. Saily and Airalo both connect to Telcel-class coverage, which is why they top this list.
How much does a Cancún eSIM cost?
Capped-data plans start at approximately $3.99 for 1GB/7 days with Saily, with 5GB/30 days around $14. Holafly unlimited starts at approximately $19 for 5 days. Trip.com daily plans run about $1.50-3 per day. For a typical one-week Cancún and Riviera Maya trip, budget roughly $10-20 for capped data or $27-47 for unlimited.
Do I need a VPN in Cancún?
Not for access — Mexico does not censor the internet. But a VPN is genuinely useful here for two reasons: it secures your traffic on the paywalled, shared resort and cafe Wi-Fi you will use constantly, and it lets you stream your home Netflix, Hulu, or sports library from the beach. We recommend NordVPN or Surfshark. See our best VPN for Mexico guide.
Will my eSIM work at Chichén Itzá, Tulum, and the cenotes?
Mostly yes, with caveats. Tulum town and the Tulum ruins have solid Telcel coverage. Chichén Itzá and Cobá have usable signal near the entrances and parking areas. Cenotes are the weak spot: open swimming cenotes near the highway usually get signal, but deep cavern and jungle cenotes (and anything underwater) will drop out. Download offline maps before day trips.
Should I just use my US carrier's roaming instead?
It depends on your carrier. Many T-Mobile Magenta plans bundle Mexico data (often at reduced speeds after a cap), so light users may be fine. AT&T and Verizon typically charge an international day pass of about $10-12 per day unless you are on a specific plan — that adds up fast on a week-long trip. An eSIM at $10-20 for the whole trip is usually cheaper and faster.
Is it better to get an eSIM or a local Telcel SIM in Cancún?
For trips under three weeks, an eSIM wins on convenience: instant activation before you fly, no passport registration, and no hunting for an OXXO or Telcel store. For stays over a month with heavy data use, a local Telcel Amigo prepaid plan (around 6GB for roughly $11 USD, top-ups at any OXXO) can be cheaper and gives you a Mexican number.