Do I need a local ID (like CUIL/DNI) or my passport to register my CheapESIM in Argentina?

Absolutely not! This is a significant advantage of choosing CheapESIM for your trip to Argentina. Local SIM cards in Argentina famously require a CUIL (a local tax ID) for activation, which tourists typically do not possess, making acquisition difficult. CheapESIM operates as an international roaming service, completely bypassing these complex local registration requirements. You can activate your eSIM quickly and easily without any passport scans or local ID, saving you time and hassle, and ensuring immediate connectivity upon arrival.