An eSIM, or embedded SIM, is a digital alternative to the traditional physical SIM card. Instead of a removable plastic chip, the eSIM is a small, programmable chip built directly into your smartphone or other compatible device. For travelers, it functions by allowing you to download and activate mobile data plans remotely, without needing to swap physical cards. With eSIM Routes, you purchase a plan, receive a QR code, and your device digitally configures itself to connect to local networks, offering immediate data access for your journey from Paris to Normandy.
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What is an eSIM and how does it function for travelers?
Updated April 22, 2026
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