Are roaming charges applicable in Luxembourg for my UK or US SIM card?

The applicability of roaming charges in Luxembourg depends on your home country and carrier. While Luxembourg is within the EU, post-Brexit, many UK providers have reintroduced roaming fees. For travelers from the United States, Switzerland, or countries outside the EU, roaming with your home SIM card will almost certainly incur significant and often prohibitive costs. A WestESIM offers a cost-effective and transparent alternative, providing predictable data expenses.