Product info
Monterrey eSIM plans
| 3GB prepaid eSIM · 14 days | $10.49$3.50 / GB | Buy eSIM |
| Ohayu recommends5GB prepaid eSIM · 30 days | $15.49$3.10 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $27.49$2.75 / GB | Buy eSIM |
| 15GB prepaid eSIM · 60 days | $34.49$2.30 / GB | Buy eSIM |
| 20GB prepaid eSIM · 90 days | $41.49$2.07 / GB | Buy eSIM |
| 50GB prepaid eSIM · 90 days | $88.99$1.78 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in Mexico. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for Monterrey?
A business trip – 3 GB
Maps, ride-hailing, calls.
A week in the northeast – 10 GB
Saltillo, the canyons, the sierra.
Across Mexico – 20 GB
Monterrey plus the capital.
Working here – 50 GB
A long stay with a laptop attached.
Coverage and network
Coverage between the mountains
Mexico mobile networks
Monterrey is Mexico's industrial capital and its wealthiest large city, and it is well covered across the metropolitan area. It sits in a bowl surrounded by the Sierra Madre Oriental, and the mountains are what shape the gaps.
Speedtest Global Index · Mobile · Mexico · June 2026
Download
40.17 Mbps
Upload
9.17 Mbps
Latency
33 ms
Global rank
#86 of 98
Monterrey, specifically
- San Pedro Garza García and the centre: The strongest coverage in the metro area. San Pedro is the wealthiest municipality in the country and it shows.
- Cerro de la Silla and the sierra: The saddle-shaped peak that defines the skyline shadows signal on its far side. The canyons - Huasteca, Matacanes - lose it quickly once you are down in them, and Matacanes is a serious canyoning route where you will be offline for hours.
- The industrial belt: Santa Catarina and Apodaca are covered as business infrastructure.
- Towards the US border: Coverage holds up to Nuevo Laredo and Reynosa. A Mexican plan stops at the border - it does not cover Texas, which is a common assumption on this route and a costly one.
- Grutas de García and the caves: The cable car and the entrance are covered. Inside the caves, nothing - it is limestone and deep.
Mexico, not the United States
The plan covers all of Mexico. Monterrey is about two hours from the Texas border and the US needs its own plan - crossing does not extend this one.
How to install eSIM
Connected in 3 steps
- 01
Buy before you fly
Choose your data plan before your trip.
- 02
Download & install
Log in to your account, tap your eSIM, and follow the on-screen instructions.
- 03
Land & activate
Activate when you arrive in Mexico. Turn on roaming for the eSIM and it connects to a local network.
Before you buy, make sure your phone supports eSIM — see Ohayu compatible devices list or dial *#06#. It's a free request to your phone's settings. If you see the EID number — your phone is eSIM-compatible.
Arriving in Monterrey
Airport Wi-Fi at MTY
Mariano Escobedo has free terminal Wi-Fi. A lot of arrivals here are business travellers connecting to industrial parks rather than the city centre, so knowing where you are actually going is worth doing online.
Side by side
Monterrey eSIM Comparison
Indicative comparison based on publicly listed Mexico plans as of August 2026. Competitor pricing and policies change - check their sites for current terms.
Frequently asked questions
Does the plan work across the border in Texas?
No. Monterrey is around two hours from Nuevo Laredo and plenty of trips here involve a border run, but a Mexican plan ends at the crossing and the US is a separate purchase. Your phone will not warn you before it starts looking for a different network.
Where to buy a SIM card in Monterrey?
Telcel and AT&T outlets across the metro area and in the malls. Since January 2026 a Mexican line has to be tied to an identity record linked to the biometric CURP system, which a visitor cannot easily do - a roaming plan avoids the question by not being a Mexican line.
Is there signal in the canyons?
Not much. La Huasteca has coverage near the entrance and loses it as the walls close in, and Matacanes is a full day of canyoning with no service at all. If you are going down there with a guide, treat it as offline and leave your plan with someone.
eSIM not working in Monterrey?
In a canyon or inside the Grutas de García there is nothing to reach. If you have crossed into Texas you are outside the plan entirely. Otherwise select Ohayu for mobile data, enable roaming, and cycle Airplane mode. Chat and support@ohayu.com are open 24/7.
