Mexico City eSIM guide: the airport, free Wi-Fi and the Metro

Our Mexico plans connect to Telcel or AT&T México, with 5G where the network and your phone support it. Their internet address is in Singapore, so a few Mexican sites may treat you as abroad.

The CRT's report on the operators' own coverage maps shows 4G reaching 100% of Mexico City's population on Telcel, AT&T and Movistar, while 5G reaches 50.82% on Telcel and 40.74% on AT&T, much less than in Quintana Roo. (source)

Telcel's business page lists CDMX first among the 100 cities with its 5G network. (source)

AT&T México says its service can be affected inside buildings, underground, in elevators and where unusually many people gather, which describes a lot of Mexico City. (source)

AICM's own directory lists a Telcel store on the upper floor of Terminal 1 (local CF7), open daily 9:00 to 19:00, and a Telcel store on the ground floor of Terminal 2 (local ALL32), open daily 7:00 to 22:00. (source)

The same directory lists a Movistar store on the upper floor of Terminal 1 (local CF6), open daily 9:00 to 20:00. It lists no AT&T store. It also lists many MOBO phone shops in both terminals, one in Terminal 2 open 24 hours, but does not say whether they sell SIM cards. (source)

None of these pages publishes an airport SIM price. If you land after 19:00 in Terminal 1, the Telcel store there is closed. (source)

The free Wi-Fi network is #AICM_FREE_WIFI in both terminals, with sessions of up to two hours, after which you accept the terms again. AICM says it uses 800 Wi-Fi 7 antennas, each serving up to 200 users, from the public halls to the final departure lounges. (source)

The Aerotrén between Terminals 1 and 2 is free and runs daily from 05:00 to 23:00, but it needs a boarding pass. Arriving in Terminal 2 and wanting the Movistar store in Terminal 1 means ground transport. (source)

The Metro station Terminal Aérea is at Terminal 1, on Boulevard Puerto Aéreo. (source)

Metrobús boards at Terminal 1 door 7 and Terminal 2 door 2. You pay with a Metrobús smart card sold at machines in both terminals, and it runs Monday to Saturday from 4:30 to 24:00 and from 5:00 on Sundays and holidays. (source)

AICM lists its authorized taxi companies, including TaxiRide, Yellow Cab, Sitio 300, Nueva Imagen, Confort, Porto Taxi and Aerotaxi. (source)

Uber says its app works in Mexico City at any hour, taxis included. Its airport page lists UberX, Comfort, Priority, Black, UberXL and Wait & Save, and a 158 cm total-size limit for checked bags. (sources 1, 2)

Mexico City's official tourism site says the city has some 30,000 free Wi-Fi hotspots reaching 1,600 neighborhoods, with no limits on time or content. It says the hotspot that set a Guinness record in 2021 is opposite the Angel of Independence. (source)

Infobae reported in December 2023 that 226 Metrobús stations on all lines have free Wi-Fi on the CFE Telecomunicaciones para Todos network. (source)

Free Wi-Fi is a useful backup, but it means joining a new network at every stop. A data plan keeps ride apps and maps working while you walk between them.

Eje Central reported on May 3, 2026 that mobile data does not work in the underground part of Metro Line 12, and that free Wi-Fi does not run in any of its 20 stations. (source)

The same report says the signal on the renovated part of Line 1 may be very weak or absent, and that the CDMX METRO WIFI network may not work reliably until the works end. On Line 4 there is no free Wi-Fi, but mobile data works. (source)

The Metro's own websites were unreachable when we checked, so these points come from the press. Load your route and destination before you go underground on Lines 1 and 12.

On October 14, 2026, AT&T México's prepaid page listed data recharges from 100 MB for MXN 10 for one day up to 6 GB for MXN 300 for 30 days, and said a new prepaid SIM needs a first recharge of MXN 50 or more at an AT&T store. (source)

Its prepaid terms slow data to 400 kbps after 500 MB in a day, and to 128 kbps after 3 GB in a month. (source)

Any Mexican SIM you buy must be registered with your passport under the 2026 registry. Since January 9, 2026, a new SIM works only for emergency calls until it is registered. Our eSIM is foreign and needs no registration today. (sources 1, 2)