Belgium eSIM

Belgium has three big mobile networks, a newer fourth running on Proximus masts, and a law that every prepaid SIM must be tied to your passport before it works, so a Belgium eSIM mostly saves you the shop queue and the ID check. This page is for visitors landing at Brussels Airport or Charleroi, or arriving by Eurostar at Brussels-Midi, from the UK, the US, Canada, Australia and beyond; if your SIM is from an EU country, it already roams here like at home.

What a week of data costs in Belgium

Prices for 7 days of data, checked on 2–3 November 2026. Daily passes charge for each day you use the phone abroad, per phone.

For a family of four on Verizon, that's $336 for one week. O2 and T-Mobile customers may need nothing extra for a short trip, though 256 kbps is slow for maps and photos.

If your SIM is from the EU, it already roams like at home in Belgium, as long as you spend more time at home than abroad. UK plans aren't part of that system any more, which is why the UK rows above carry charges.

Landing at Brussels Airport (BRU), Charleroi (CRL) and Brussels-Midi

Switch the kimsim line on as the plane taxis to the gate and turn on Data Roaming for the kimsim line only. Then go through passport control, collect your bags and walk out through customs. With data already working, you can skip the search for a SIM seller; the airport's own pages list chocolates, perfume, books and gadgets on the way to arrivals, but don't mention a mobile operator counter.

Entry rules. Since 12 October 2025, the EU's Entry/Exit System records non-EU visitors' fingerprints and a photo at the Schengen border, and it has been fully in place since 10 April 2026. There's no fee and nothing to do in advance, but expect a longer queue. ETIAS, the €20 travel authorisation for visa-free visitors, is not in operation yet; the official site says the EU will announce the start date several months ahead. So don't pay any website that offers you an ETIAS today. British passports must have been issued less than 10 years before you arrive and expire at least 3 months after you leave the Schengen area.

Brussels Airport into the city. The railway station is under the terminal, on level -1, with direct trains to Brussels about six times an hour from early morning until around midnight. Buy the train ticket before you board, in the SNCB app or at a machine: since 1 July 2026, Belgian trains no longer sell tickets on board, and a conductor can charge €90 if you have none. The STIB Airport Line, bus 12, is the other option: tap a contactless bank card or phone on the reader and you pay the €7.90 Airport2City fare.

Charleroi. The budget-airline airport is about 60 km south of Brussels. The Flibco shuttle leaves from the front exit of Terminal 1 every 20 minutes and takes 55 to 60 minutes to Brussels-Midi, depending on traffic. Book it on your phone and keep the ticket offline.

Eurostar. Eurostar trains from London arrive at Brussels-South, signed Brussels-Midi or Bruxelles-Midi. You go through UK exit and Schengen entry checks at St Pancras before you board, so there's no passport queue when you arrive. Switch the kimsim line on as the train pulls into Brussels-Midi; before that you're in France, where a Belgium plan won't connect. The UK Foreign Office warns that pickpockets work at Brussels-Midi and Brussels-Nord, so keep your phone out of a back pocket on the platform.

Networks and coverage

Belgium has three national mobile networks and a newer fourth operator:

• Proximus: the former Belgacom, majority owned by the Belgian state.
• Orange Belgium: called Mobistar until 9 May 2016. It bought the cable company VOO in 2024.
• BASE: once owned by KPN, bought by Telenet in a deal announced in April 2015. BASE is the mobile brand of the Telenet network.
• Digi: launched in Belgium on 11 December 2024, using Proximus antennas while it builds its own network.

All Belgian operators had switched 3G off by July 2025, so a phone that only does 3G won't get data here. 5G is widespread. In the regulator's January 2025 measurements, Telenet's 5G reached 99.8% of homes outdoors, Proximus 98.9% and Orange 95.8%. Coverage by land area was lower, at 98%, 94% and 82%. Proximus says its 5G now reaches 90% of the population.

The Belgium plan uses Proximus, with 5G, plus Base and Orange on 4G. Your phone shows the Belgian operator's name, not kimsim. Expect signal to thin in the forested valleys of the Ardennes, inside thick-walled old buildings and in big crowds. The networks your plan uses are listed above.

Brussels, Flanders and Wallonia

• Brussels: dense coverage across the centre, the Grand-Place and the EU quarter. The UK Foreign Office notes that strikes and demonstrations often hit transport hubs and the Schuman area, so check the STIB or SNCB app before you set off.
• Ghent: about 36 minutes from Brussels by train on average. Trains arrive at Gent-Sint-Pieters, outside the old centre, so a live map helps for the tram or the walk in.
• Bruges: about 1 hour 4 minutes from Brussels on a weekend train. It's a compact city on foot. If you book a canal boat or a museum slot, keep the ticket offline.
• Antwerp: on the rail line to the Netherlands. If your day trip carries on to Rotterdam or Amsterdam, that's a different country and network.
• Wallonia and the Ardennes: Namur, Dinant and Durbuy are fine in town. In the deep valleys, download offline maps before you walk or drive.

This is general guidance, not a coverage map. If one network is weak where you are, switch network by hand.

Trains, trams and buses

• STIB (Brussels metro, trams and buses): tap a contactless bank card, phone or watch on the reader. A ride is €2.40, changes within 60 minutes are free, and the most you pay in a day is €8.50. Each card or phone pays for one person only, so the family needs one each.
• De Lijn (Flanders trams and buses, including Ghent, Antwerp and the coast): tap on the white reader; a ride is €3, and one card can pay for up to five people. Changes within 60 minutes are free, but tap again on the next vehicle. Apple Pay and Google Pay work; your bank's own app doesn't.
• SNCB trains: there's no tap-in on Belgian trains. Buy in the SNCB app, which shows the ticket as a barcode on the phone you bought it on, or at a machine, before you board. Keep the phone charged: the barcode is your ticket.
• Across the border: Eurostar links Brussels with London, Paris, Amsterdam and Cologne. Download your ticket before you board, in case signal drops.

Apps worth having

• SNCB app: train times, delays and tickets.
• Uber and Bolt: both work in Brussels. Bolt also rents e-bikes and scooters there. Set accounts up at home, because sign-up can send a code to your usual number.
• Google Maps: good for STIB and De Lijn routes and walking. Download an offline area for the Ardennes.
• Payments: contactless cards and phone wallets pay for all city transport. Some banks send a text code to approve a new device, so keep your home line on for texts with its roaming off.
• 112 BE: the official Belgian emergency app, which the UK Foreign Office points visitors to.
• WhatsApp: many hosts and guides message you here. Keep your WhatsApp number working abroad.

SIM and phone rules

In Belgium, every prepaid SIM must be tied to a named person. Since a Royal Decree of 27 November 2016, users of prepaid cards must be identified, and that includes foreign operators' cards sold in Belgium. In a shop you show the original of a valid ID; an international passport is accepted, and a copy isn't. Online, BASE asks for a photo of your passport and a selfie, which it compares. Until it's identified, a Proximus Pay&Go+ card can't call, text or go online.

A travel eSIM installed at home skips the shop and the ID check. It's data only, so your home number stays in the phone for calls and texts.

Common mistakes

• Boarding a train without a ticket. Since July 2026 you can't buy one on board, and the fine is €90. Buy in the SNCB app on the platform.
• Leaving Data Roaming on for your home line. For non-EU SIMs, that's where daily charges start. Why roaming goes on for the kimsim line only
• Starting the plan in the wrong country. If you fly into Amsterdam or Paris and take the train to Brussels, keep the kimsim line off until you cross into Belgium, or it may not connect. If your plan started early
• Day trips to Amsterdam, Lille or Luxembourg on a Belgium plan. Those are other countries. Look at the Netherlands, France, Luxembourg or the Europe plan. How regional plans work
• No way to call for help. 112 is the number for an ambulance, the fire service or the police. A data-only eSIM can't dial it, so use your home line or any local phone.

More on Belgium

• eSIM for Europe: a guide for US, Canada and Australia
• How much data do I need for a week abroad?
• eSIM vs roaming: which is cheaper for your trip?

How we put this page together

We checked the Belgian regulator's (BIPT) prepaid and 5G papers, Proximus and BASE, STIB, De Lijn, SNCB, Flibco and Brussels Airport, carriers' roaming price pages, EU and UK government sites and the other sources noted above on 1–3 November 2026. Brussels Airport's, SNCB's, AT&T's and T-Mobile's pages block automated checks, so we read those facts from the pages' search listings. We haven't measured speeds or coverage in Belgium ourselves, so coverage notes are general guidance, not a map. kimsim sells the eSIMs on this page.