Most modern phones do, but you must check our specific list here: eSIM Compatible Devices to be 100% sure before purchasing. 

 Yes. While public transport is free nationwide, you need active mobile data to use the Mobiliteit.lu app for real-time schedules and to find the correct bus or train platform in Luxembourg City. 

 You will generally have signal at the trailheads and villages like Echternach, but coverage often drops in the deep rocky gorges and dense forests of the Mullerthal region. 

 You will have excellent signal at the entrance and panoramic viewpoints, but the connection will likely be lost when you go deep inside the thick rock tunnels and defensive galleries of the Casemates. 

 To match the high standards of the Grand Duchy, our eSIM connects to the country’s premium networks, typically POST Luxembourg or Tango. This ensures you get the best possible 4G/5G coverage, whether you are in the deep valleys of the Grund in Luxembourg City, hiking in the Mullerthal Trail (Little Switzerland), or visiting Vianden Castle in the north. 

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 Cellesim Luxembourg eSIM is the smartest way to lock in a low, fixed price for data without risking a surprise bill from your home carrier. 

Absolutely. Luxembourg is a global hub for banking and EU institutions. Our eSIM offers high-speed, low-latency data suitable for professional use. You can confidently host Zoom or Teams calls, download large attachments, and stay productive from your hotel or a café in the city center without interruption. 

 While Luxembourg offers free public transport (trains, trams, buses), relying on public Wi-Fi can be frustrating and insecure. Public networks are often slow, have time limits, or leave your device vulnerable to hacking. A Cellesim eSIM provides a private, secure, and high-speed connection, which is essential if you are accessing mobile banking or business emails while commuting to the Kirchberg financial district.