The first alternative is getting a SIM Card (or Chip, as we call it here) on arrival in Buenos Aires. This is pretty simple and convenient, as you don’t risk losing information from your cell phone. SIM cards are sold in “kiosks” along with many other points in the city. There is even a Personal (mobile operator) stand at Ezeiza airport. You may also top up your card and activate an internet pack.
Two other major mobile operators in Argentina are Movistar and Claro, both with wide coverage across the country.
1. Movistar: Once you have bought a SIM Card in one of the stores or selling points, you need to send a private message with the word #NOMI to the provider either through Twitter or Facebook. (@movistararg). Next you will be asked to send specific information, like the photo in your passport, a photo of you posing with such document, a photo of the chip, your accommodation address as well as the duration of your stay in the country. That done, and through the same channel, you will receive details about the plans they offer.
Web Movistar para turistas
2. Claro: The procedure is more or less the same, though it may be done directly from their official website. In this way you may be able to activate your SIM Card to use it freely. A pretty straightforward formality that enables safe and ready access to the Internet.
Web Claro para turistas
Cost of the plans: Depending on the number of GB you choose, prices range between USD$ 4 and USD$ 7.