SIM cards are sold landside in the Terminal 1 arrivals area, after baggage claim, mostly by currency exchange offices and phone accessory booths that resell Vodafone and other prepaid SIMs. We could not confirm an operator-run store in the terminal, so ask at the information desk if you cannot find a counter.
Bring your passport and an unlocked phone. TIM Tourist costs 14.99 euros for 30 days plus 10 euros for the SIM, 24.99 euros in total, with 200 GB of data in Italy (23 GB of it usable elsewhere in the EU) and unlimited national calls (checked October 2026). It is for new TIM customers and is sold at TIM points of sale.