A local tourist line needs a passport and a declared stay
Argentina's official plain-language guidance says mobile lines, including prepaid ones, must be registered. Foreign tourists must give their details and state how long they will be in the country; the guide says the line is to be disabled when that declared period ends. Registration is free, and an unregistered line may be blocked except for operator support and emergency calls. A visitor planning a long stay or a return visit should give an accurate period and ask the carrier what happens when that period expires rather than assuming a top-up keeps the number alive.
Bring a valid passport when visiting an operator's sales point. The formal registration requirement is separate from whether the handset is unlocked and compatible with the chosen network. A local line supplies a number for ordinary calls and SMS as well as data when its tariff includes them. A data-only travel profile may be enough for maps and app messaging, but it should not be mistaken for a registered Argentine number. If an app or accommodation provider insists on a local SMS, confirm that requirement before committing to a data-only option.
Compare the actual tourist activation routes
Personal's tourist page says its prepaid chip can be bought at Personal branches, branches in shopping centres and authorised kiosks. A line bought at an official sales point is described as already active; a kiosk purchase must be taken to a Personal sales point for activation with a DNI or passport available. The page also says an unlocked phone can request a Personal eSIM in a commercial office or through the operator's WhatsApp channel. That does not by itself confirm that every tourist prepaid tariff is issued as an eSIM, so ask for the precise product and its identity check before travelling to a branch.
Claro publishes a tourist prepaid physical SIM page and says a passport and the line number are needed to activate it. Movistar's separate tourist page directs visitors to obtain a SIM in a kiosk or sales point, then contact its WhatsApp activation channel with the code #NOMI before selecting a pack. These are distinct workflows: buying a wrapper in a kiosk may leave a line unusable until registration is finished. Choose an official point that can complete the process if data is needed immediately. Avoid quoting an undated shop display as a continuing price; ask for the current pack allowance, validity and recharge options at purchase.
Decide when the eSIM can actually be issued
An eSIM capable phone does not remove Argentina's subscriber registration step. Personal describes eSIM management through its offices or WhatsApp for an unlocked phone, but its tourist page is centred on a physical prepaid chip. Movistar's tourist instructions likewise describe a SIM card and a separate WhatsApp nomination step. Ask the selected operator whether it can issue a new passport-registered tourist line directly as eSIM, or whether a physical SIM must be activated first and changed later. A replacement may require another identity check. Keep the home SIM available if it receives bank codes while the Argentine line handles local calls and data.
For a travel data eSIM acquired before flying, save the installation instructions offline and note whether the provider expects installation before departure or activation after arrival. For a local eSIM, confirm that the handset is unlocked, that the model supports eSIM, and that there is a working connection while its profile downloads. Do not delete a newly installed profile merely because its signal has not appeared at the airport; first confirm the chosen data line and any activation instructions. If carrying a second physical SIM, keep its card and original packaging secure until the trip ends.
Check the entire route, not just the destination city
Claro's public map lets users inspect estimated 3G, 4G and 5G service by area. Claro explicitly calls it a prediction and says the display does not guarantee service at a particular location. That distinction matters on a long coach ride or drive from Buenos Aires towards Bariloche, Mendoza, the northwest or Tierra del Fuego: a city pin does not show the intervening road. Check the map for overnight stops and travel legs, and compare the operator underlying any alternative plan before buying a second line. Two profiles using the same network may share the same gap.
Bring downloaded maps, tickets and lodging addresses for remote legs, where losing a connection can also interrupt an online top-up. A 5G icon on a tariff is no evidence that the destination has 5G; the handset must support the available radio technology and bands. A coverage map is most useful as a planning aid, then a live test on arrival confirms the actual result. If the trip crosses into Chile, Uruguay, Paraguay or Brazil, treat that as a new roaming decision rather than assuming an Argentine domestic pack follows the traveller across the border.
Get the first connection working before leaving the airport
Argentina's airport regulator set a free Wi-Fi service standard for airports operated in its Group A concession, including public and departure areas. This provides a useful opportunity at a major arrival airport such as Ezeiza to retrieve an eSIM email or contact an operator. Check the airport's current network signage rather than assuming an old network name. Use Wi-Fi to complete registration or retrieve a QR code, then turn it off briefly and confirm that mobile data works before leaving for the city. The airport connection should be a setup aid, not the only copy of a booking or address.
Personal's tourist page names its app and recharge portal as top-up routes. Movistar's tourist page says kiosks can recharge by line number; it explains that the number appears on the SIM wrapper or can be obtained by sending NUM to 321. Save the local number in a contact before throwing away packaging. Keep enough balance for a needed add-on and note when the chosen pack expires. Argentina's government cautions that public Wi-Fi can be impersonated, so verify the network displayed by the airport and avoid entering sensitive payment details on a suspicious portal.
Plan for SUBE journeys and keep voice calling available
The national SUBE transport card can be obtained at a Punto SUBE or ordered online, according to the government. Its recharge page lists the SUBE app, electronic banking and wallets as ways to add credit, alongside in-person points. It says a load may then need accreditation through an automatic terminal, the app or a bus validator with Carga a Bordo. That is a concrete reason to have data while travelling through Buenos Aires and other SUBE cities, but the card itself is worth arranging before a bus or metro transfer. Check that a foreign-issued card or wallet works before relying on an app payment.
The government's emergency directory lists 911 for the national emergency centre and 107 for SAME medical emergencies in Buenos Aires city and named provincial localities. Store the numbers and the address of your accommodation offline. A data-only eSIM does not itself promise a voice line for those calls; retain a working voice-capable SIM or another way to reach help. If a local prepaid line has not completed registration, the official registration guide says emergency calls remain possible, but that is not a substitute for completing the required identity process and testing ordinary connectivity.
Networks our Argentina plans use
These are the operators named on our plans for Argentina, taken from the plan data, so the list follows the catalogue.
- CLARO AR4G
- Claro Argentina4G
- Movistar4G
- Personal5G
- TelefonicaLTE
- Telefonica Moviles Argentina S.A (Movistar)4G