eSIM Europe refers to a virtual SIM card that allows you to access cellular data and make phone calls while traveling in Europe. Instead of buying a physical SIM card, which requires you to swap out your existing SIM and may involve additional fees, an eSIM is downloaded onto your phone as a digital file. This allows you to use your phone with a local European carrier without needing a physical card. eSIM Europe is typically available for purchase online and provide coverage across multiple European countries, making them a convenient and cost-effective option for travelers.