Yes, you certainly do. While public transport across Luxembourg is commendably free, active mobile data is still essential for using the Mobiliteit.lu app. This app provides crucial real-time schedules and helps you locate the correct bus or train platform in Luxembourg City, ensuring your connections are precise and you're always on time for your next leg.
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Do I need eSIMFlyer data for Luxembourg's Mobiliteit.lu app, even if transport is free?
Updated April 22, 2026
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