The ETravelSim Poland eSIM works across all of Krakow's main attractions including Wawel Royal Castle, the Main Market Square (Rynek Główny), the Kazimierz Jewish Quarter, and Schindler's Factory with strong 4G coverage. The Auschwitz-Birkenau Memorial in Oświęcim, about 70 km from Krakow, has reliable 4G at the visitor centre, parking, and the main exhibition areas. Coverage softens slightly between the Auschwitz I and Birkenau sites along the connecting shuttle route, but holds at both museum entrances.