Luxembourg
eSIM.Fast 5G data plans. Instant activation, no SIM swap.

The best Luxembourg eSIM runs on POST, Orange and Tango, all with 5G. Luxembourg is small, wealthy and densely covered, so national 4G/5G is effectively complete and there is no coverage gap for a visitor to plan around. Plans are prepaid with no contract, your QR code arrives by email within seconds, and every plan includes free mobile hotspot. Two honest notes: Luxembourg is in the EU and uses the euro, so most European visitors will not need to buy anything at all, and the country is small enough to cross in under an hour — if your trip touches Belgium, France or Germany, the Europe regional plan is the better product.

Getting online in Luxembourg takes about two minutes. Confirm your phone supports eSIM — iPhone XS (2018) and newer and most Android flagships from 2020 qualify. Choose your Luxembourg plan on Flysimio and pay with card, Apple Pay, or Google Pay; your QR code arrives by email within seconds. On Wi-Fi before you travel, open Settings → Cellular → Add eSIM (iPhone) or Network & Internet → SIMs → Add eSIM (Android) and scan it. Switch the line on at Findel airport and turn on Data Roaming for that line only. Because the borders are so close, keep an eye on your network indicator — it is easy to drift onto a Belgian, French or German tower.

Very little, and there's a specific reason beyond the widespread Wi-Fi: Luxembourg made all public transport free nationwide in 2020 — trains, trams and buses, for visitors as well as residents. There is no ticketing app to run and no contactless top-up to manage, so your data use drops to maps and messaging. A few days typically uses well under 1 GB, and a 3 GB plan is more than enough for a fortnight. Coverage is complete across Luxembourg City including the Grund and the Kirchberg EU Quarter, out to Vianden and Echternach, and along the Moselle wine route.

Flysimio runs as a second line beside your usual SIM, so you keep your home number for calls and texts while your Luxembourgish data flows over the eSIM — standard dual-SIM behaviour on iPhone XS and later and most Android phones from 2018. Set the Flysimio eSIM as your cellular-data line and turn on Data Roaming for that line only; it simply lets the eSIM connect to Luxembourg's networks, with no roaming fees. Given how many visitors here are cross-border commuters or business travellers, it's worth checking whether a regional plan fits your actual movement pattern better than a country plan.

Every Flysimio Luxembourg plan includes mobile hotspot at no extra cost and without throttling, which matters here more than in most places — a lot of visitors are working, and tethering a laptop from the EU Quarter or a hotel in Kirchberg is a common need. As a data-only eSIM it has no Luxembourgish phone number, but WhatsApp, FaceTime and Google Meet handle calls and messages over data, and your home number stays reachable on your primary SIM. English is widely spoken in the capital, so you rarely need a local number to arrange anything.

For a two-day business trip or a stop between Brussels and Trier, the 1 GB / 7-day plan is the sensible buy — and honestly, free public transport plus hotel Wi-Fi means many visitors barely touch it. For a longer stay a 3–5 GB plan covers everything comfortably. Because Flysimio gives you six months to activate, you can buy before you leave and validity only starts when your eSIM first connects in Luxembourg. If your travel crosses into Belgium, France or Germany at any point — and in a country this size it usually does — compare the Europe regional plan first.