It depends. Luxembourg is in the EU. However, since Brexit, many UK providers have reintroduced roaming charges. For travelers from the USA, Switzerland, or Asia, roaming fees are definitely not free and can be very expensive. Using a Truly Roaming Luxembourg eSIM is the smartest way to lock in a low, fixed price for data without risking a surprise bill from your home carrier.
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Will my mobile phone work in Luxembourg?
Updated April 22, 2026
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