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Official Languages: Spanish

English Is Common in Tourism Focused Parts of Buenos Aires and Major Sights, but It Thins Out Quickly Elsewhere. Basic Spanish Goes a Long Way for Transport, Restaurants, and Everyday Situations, and Locals Are Generally Patient with Visitors Who Try

Mobile Network: Coverage Runs on 4G across Most Populated Areas, with 5G Live in Buenos Aires, Cordoba, and Other Big Cities. Networks Have Largely Retired 3G, so a 3G Only Handset May Lose Service outside Urban Areas. Remote Patagonia and High Altitude Routes Can Go Long Distances with No Signal at All

Roaming/SIM/eSIM: An eSIM Is Often the Easiest Option If Your Phone Supports It, since Data Can Be Set Up before You Land with No Store Visit Needed. A Local Physical SIM Can Be Cheaper for a Longer Stay but Usually Needs an Unlocked Phone and ID to Register. Roaming Suits a Short Visit If Your Home Plan Already Covers Argentina Reasonably. Whichever You Choose, Download Offline Maps before Heading into Patagonia or Other Remote Areas Where Signal Disappears

Cards Are Accepted Almost Everywhere in Buenos Aires and Other Big Cities, Including Supermarkets, Chain Restaurants, and Most Hotels. Currency Rules That Once Made Cards a Poor Deal Were Lifted, so a Foreign Card Now Converts Close to the Market Rate. Keep Cash for Small Shops, Local Markets, Rural Areas, and Some Taxis, and Choose Pesos over Your Home Currency at the Terminal

Tipping Is Customary in Restaurants, with around 10 Percent Standard and Up to 15 for Great Service. It Is Usually Left in Cash Even When the Bill Is Paid by Card, since Receipts Rarely Carry a Tip Line. Rounding Up Is Common for Taxi Drivers, and a Little Cash Is Appreciated by Porters and Hotel Housekeeping

Plug Type: Type C and Type I

Voltage: 220V, 50Hz

Adapter: Commonly Yes for Visitors from Countries Using Other Plug Shapes or 110V Systems. Most Phone and Laptop Chargers Accept 100 to 240V and Work as They Are, but Check the Label on Anything Else, Like a Hair Dryer, before Plugging It In