New to co:sim?
Land in Luxembourg already connected. Claim your free 1 GB / 7-day eSIM trial — works across all 33 European countries, top up anytime.
Claim Free eSIM$0 at checkout · Top up anytime · New users only
Your free eSIM connects automatically to these mobile carriers — the same networks locals use, no SIM swap required.
Walk off the jet bridge with maps, ride-hailing and messaging already working at these arrival points.
Strong 4G/5G across the cities and neighbourhoods most travellers actually visit.
New tram across Kirchberg + Ville Basse has solid 5G; the Mobilitéit.lu app handles live departures for the free transit network.
Industrial south + Belval university campus; full 5G across the centre + the tram extension.
Castle town in the Ardennes; full 4G at the castle + along the Our river. Cable car to the upper bastion stays connected.
"Little Switzerland" — POST covers main villages fully but deeper canyon sections (Schiessentümpel, Wolfsschlucht) can dip. Pre-cache Komoot.
The eSIM gets you online — these are the local apps it unlocks the moment you arrive.
Luxembourg Railways — all CFL trains + cross-border to Brussels / Trier / Metz. Free domestic since 2020.
National multimodal app — buses, trams, trains, all free since 2020. Live departures everywhere.
Bolt operates in Luxembourg City + the southern conurbation. Uber is not as established.
Mullerthal trails + Müllerthal hiking circuit are Komoot-mapped. Pre-cache the regions before remote hikes.
What you’d pay at the airport SIM kiosk — and what you save by activating the eSIM before you fly.
The hotel-address gate is the actual blocker — most travellers can’t provide one.
Try our cutting-edge eSIM technology for free across all 33 European destinations.
Enough for maps, messages, ride-hailing and light browsing when you arrive — works from France and Germany to Iceland and Greece.
Add more data or extend your validity whenever you need it — top-ups stack onto the same eSIM, no reinstall, no SIM swap.
Connects to top local carriers — the same fast, reliable networks our paid plans use.
This offer is for new users only. Hurry, claim it before it's gone!
Hit the button below — no signup required upfront, just enter your email at checkout.
Claim nowYour eSIM QR code and install link land in your inbox in seconds.
Scan the QR code from your phone's eSIM settings and you're online across 33 countries.
The same free plan works across all 33 countries — pick another destination for arrival-day specifics.
These destinations are not part of the 33-country plan — each has its own free eSIM, with its own arrival tips.
Everything you need to know about the free new-user eSIM offer.