Buy an Orange Belgium Tempo card in town for EUR 15 and you get 5 GB, 4,000 texts and 50 minutes for a month, which is the best value on sale in this country. Buy something that looks similar at the Brussels Airport arrivals counter and the same 5 GB costs EUR 25, which is the single most avoidable mistake a visitor makes here. Proximus is the faster network and charges for it, BASE sells generous monthly bundles aimed at residents rather than tourists, and every one of them requires you to identify yourself before the line will carry a byte, a rule Belgium wrote into law in 2016 and enforced from July 2017. The upside of a local card is a Belgian number, which unlocks the wifi.brussels sign-up and any Belgian service that texts you a code. Our Belgium eSIM guide covers the no-counter route, the Holafly review looks at the uncapped option for laptop-heavy trips, and the eSIM Finder will match a plan to how long you are staying.
What This Guide Covers
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Belgium's Three Networks, and Why Two of Them Share Masts
Belgium is served by three network owners. Proximus is the former incumbent and posts the fastest measured mobile speeds in the country, with the regulator recording an average 4G download figure near 84.9 Mbit/s. Orange Belgium is the main challenger and prices considerably more aggressively. Telenet is the third, and it sells mobile to consumers under the BASE brand, having absorbed that operator years ago.
The wrinkle that makes Belgium unusual is that Proximus and Orange stopped competing on masts. They announced a radio access network partnership in 2019 and stood up a jointly owned company, MWingz, in April 2020 to design, build and run a single shared grid. Each operator shed roughly 35 percent of its own site footprint while the combined network ended up with around 20 percent more mast locations than either had alone. So when you compare a Proximus starter against an Orange starter, you are largely comparing tariffs and shop staff, not radio coverage. Telenet stayed out, ran its own network, and challenged the arrangement at the competition authority in 2022 without success. Ookla has since credited Telenet with the country's best 5G availability, meaning its customers spend more of their time attached to an actual 5G cell.
What a Belgian number gets you that data alone does not
The free regional network, wifi.brussels, covers more than 200 hotspots including metro stations, squares and several museums, and it is genuinely worth having. Signing up requires a working mobile number, because the account is confirmed by a text message. A local prepaid card gives you that number for a few euros. A data-only travel eSIM does not, which is the strongest practical argument for buying a physical card if you are staying more than a few days or expect any Belgian service, delivery app or ticketing site to send you a verification code.
Proximus Pay&Go
Proximus: The Speed Benchmark, at Incumbent Prices
Best measured performance in Belgium, and the widest shop network to fix problems in
Proximus is what you buy when you want the safe choice and do not mind paying a euro or two more for it. The starter pack is straightforward, the shops are staffed by people who deal with foreign passports every day, and the app handles top-ups without you needing to decode a Dutch or French menu. Its data packs are modest by Belgian standards, though: a EUR 15 reload delivers up to 6 GB where Orange gives 5 GB plus thousands of texts and a pile of minutes for the same money.
One trap specific to Proximus prepaid: the Daily Roaming Pass, which the company sells for travel outside the EU, is not available to prepaid customers at all. Inside the EU that changes nothing, because roam-like-at-home applies automatically, but if your route continues to Switzerland, Turkey or Morocco you will be paying whatever the visited network charges. That is a good reason to think of a Belgian card as a Belgian and EU product rather than a general travel plan.
Strengths
Weaknesses
Orange Belgium and BASE
Orange Belgium Tempo: The Value Pick
Same shared masts as Proximus, noticeably more data for the money
The EUR 15 Tempo pack is the sweet spot of Belgian prepaid. Five gigabytes across a month comfortably covers a fortnight of maps, transit apps, restaurant hunting and social posting, the 50 voice minutes are enough to call a hotel or a taxi, and because Orange rides the shared grid you are not trading coverage for the saving. The contrast with what the same brand charges in the arrivals hall is stark: EUR 25 there buys the 5 GB that EUR 15 buys on Rue Neuve, so unless you need data in the first hour, wait until you are in town.
BASE by Telenet: Built for Residents, Not Tourists
Generous monthly bundles on an independent network with the best 5G availability
BASE tariffs are shaped around people who live here and want unlimited calling, which is exactly what a two-week visitor does not need. Paying EUR 16.29 for 1.5 GB when Orange sells 5 GB for EUR 15 is hard to defend on a short trip. Where BASE earns a look is a long stay: if you are in Brussels for a month of work, Kong at around EUR 26.48 with 6 GB and uncapped voice is a reasonable resident-style package, and Telenet's independent network gives you a genuine alternative if the shared Proximus and Orange grid disappoints you somewhere specific.
Do not overlook the resellers
Belgium has an unusually busy market in mobile virtual operators, and Lycamobile in particular targets the international-calling crowd with packs sold in Brussels phone shops and at the airport, typically EUR 30 for 10 GB up to EUR 50 for 50 GB with unlimited calls and texts. These ride the host networks, so coverage is fine, and the very large data allowances beat anything the three main brands offer at the same price. The trade-off is patchier customer service and top-up flows that assume you read French or Dutch.
The Identification Rule Behind Every Belgian Counter
There are no anonymous prepaid cards in Belgium. Parliament amended Article 127 of the 2005 electronic communications law in September 2016 as part of a package of counter-terrorism measures, a Royal Decree set out how operators must record customer identity, and a six-month grace period ran out on 7 July 2017. Cards that had not been identified by that date were cut off from everything except emergency numbers. The rule has been in continuous force ever since, and it applies to a EUR 10 supermarket starter exactly as it applies to a contract line.
Carry the document the counter is allowed to accept
Non-EU visitors need a passport. Citizens of EU member states can present a national identity card instead, which is what most Belgians use. A photo on your phone will not do, and neither will a driving licence. If you have already checked into your hotel and left the passport in the safe, you are going back for it.
Get identified before you load any credit
Operators advise completing the identification step before you top up, because an unidentified line can be suspended at any point and you do not want credit stranded on a card that stops working. In a branded store the assistant scans your document and the line goes live within minutes. Supermarket-bought cards usually need an online identification flow instead, which asks you to upload an image of your document.
Note the number down before you leave the shop
Belgian prepaid numbers start 04 and you will need yours for the wifi.brussels sign-up, for any delivery or ticketing service, and for topping up online. Ask the assistant to write it on the receipt, since the packaging often goes in the bin at the hotel.
Test data and a text before you walk out
Open a map and send yourself a message from the counter. Identification is normally instant in a branded shop, but the online route used by supermarket cards can sit in a verification queue, and it is far easier to sort out with staff in front of you than from a cafe in Ghent an hour later.
Belgian Prepaid Plans and eSIMs Compared
| Option | Data | Price | Best for |
|---|---|---|---|
| Orange Tempo, town price | 5 GB plus 4,000 texts and 50 minutes, 31 days | EUR 15 | The default local card for a week or two |
| Orange Tempo, larger pack | 7 GB plus 5,000 texts, 31 days | EUR 20 | Longer stays that lean on mobile data outdoors |
| Proximus Pay&Go starter | 3 GB plus 500 texts and 10 minutes, 31 days | EUR 10 | Anyone who wants the fastest network and simple setup |
| BASE Kong | 6 GB with unlimited calls and texts, monthly | About EUR 26.48 | A month of living and working in Brussels |
| Airport SIM counter | 5 GB Orange pack, or 3 GB Proximus | EUR 25, or EUR 10 | Only if you need data before leaving the terminal |
| Travel eSIM, metered | 5 GB over 30 days on Proximus and BASE | Around $8.50 | Short trips with no counter visit and no ID check |
| Travel eSIM, uncapped | Unlimited | About $25 for a week | Conference weeks and tethered laptops |
Read down that table and the pattern is clear. A town-bought Orange card is the cheapest way to buy a lot of Belgian data, an eSIM is the cheapest way to buy a little of it, and the airport counter is the worst way to buy either unless the timing genuinely forces your hand. What the eSIM cannot supply at any price is the Belgian number, and what the local card cannot supply is data during the twenty minutes between landing and finding the shop. Travelers who want both simply run the eSIM as their data line and pick up a cheap Proximus starter later in the week if a text-verification wall appears.
Where to Buy a SIM Card in Belgium
Operator stores in central Brussels
Proximus, Orange and BASE all keep branches along Rue Neuve and inside the City 2 shopping centre, a five-minute walk from the Rogier and De Brouckere metro stops, with more at Docks Bruxsel and on the Meir in Antwerp. These are the places to go if you want the identification done on the spot and the pack explained in English.
Supermarkets and phone shops
Carrefour, Delhaize and the independent phone shops clustered around Brussels-Midi and the Chaussee d'Ixelles all sell starter cards. They are cheap and convenient, but many hand you a card that still needs identifying through an online form, so allow for that before you count on the line working.
Brussels Airport arrivals
A SIM Local counter sits by baggage belt 3, roughly 07:00 to 20:00 with much shorter Sunday hours, and the WHSmith in the arrivals hall runs a second counter from 06:00 until 02:00 selling Orange, Proximus and Lycamobile. Handy, and priced accordingly.
Topping up later
Once identified, you can add credit in the operator app, on the website with a card, at supermarket checkouts, or from the yellow terminals in larger stations. There is no need to find a branded store again, which matters if you are heading to Bruges or the Ardennes for the rest of the week.
Small things that make a Belgian SIM behave
Language settings decide your evening: Activation SMS messages and app menus default to Dutch in Flanders and French in Wallonia and Brussels. Switch the app language before you need it rather than translating a top-up screen in a hurry.
Watch the 31-day clock, not the credit: Belgian data packs expire on a date, not when the gigabytes run out. Buying a big pack on your last weekend wastes most of it.
Your card works across the EU without asking: Belgian prepaid lines carry roam-like-at-home, so the same allowance covers a Lille lunch or a Maastricht afternoon, but it stops mattering the moment you cross into Switzerland.
Keep a second line for texts: If you travel on an eSIM, leaving your home SIM active for inbound messages solves the verification-code problem that the wifi.brussels sign-up creates.
Coastal tram and Ardennes valleys are the weak spots: Everything urban is excellent, but the long coastal tram run and the wooded Semois valleys will drop you, so cache maps before either.
Frequently Asked Questions
What identification does a Belgian shop ask for before selling me a SIM?
A passport if you are not an EU citizen, or a national identity card if you are. Belgium made identification compulsory by amending Article 127 of its electronic communications law in September 2016, and from 7 July 2017 any prepaid card that had not been identified was restricted to emergency calls only. Branded stores complete the check in a couple of minutes. Cards bought in supermarkets often push you to an online identification form instead, which takes longer and needs a photo of the document.
Which Belgian prepaid pack gives the most data for the money?
The Orange Belgium Tempo pack at EUR 15, which bundles 5 GB with 4,000 texts and 50 minutes over 31 days. Its EUR 20 sibling stretches to 7 GB. Proximus asks EUR 10 for a 3 GB starter and around EUR 15 for a data pack of up to 6 GB, so it is competitive but rarely cheaper. BASE tariffs such as Kong at roughly EUR 26.48 for 6 GB are aimed at residents who want unlimited calling and are poor value for a short visit.
Is it worth waiting until I leave the airport to buy a card?
Almost always. The same Orange 5 GB allowance that costs EUR 15 in a Rue Neuve shop is priced around EUR 25 at the arrivals counters, and larger airport packs run to EUR 50. The Proximus 3 GB starter at about EUR 10 is the one airport product that holds its value. Since the train to Brussels-Central takes under twenty minutes and every hotel has WiFi, the only good reason to buy in the terminal is needing data immediately for a transfer or a meeting.
Does a Belgian prepaid card keep working in France or the Netherlands?
Yes, at no extra charge. Roam-like-at-home applies to Belgian prepaid lines across the EU, the EEA and the UK, so the allowance you bought in Brussels covers a day in Lille, an afternoon in Maastricht and a weekend in Cologne without any setting to change. It does not extend to Switzerland, and Proximus prepaid customers specifically cannot buy the Daily Roaming Pass that covers destinations outside that zone, so a longer non-EU leg needs a different plan.
Do I actually need a Belgian number, or will data do?
Data alone is fine for a straightforward sightseeing trip, because maps, messaging and calls over the internet do not care what number you have. A local number becomes useful for three things: creating the wifi.brussels account, which is verified by text; using Belgian delivery, parking or ticketing services that send codes by SMS; and calling a Belgian landline cheaply. If none of those apply, an eSIM with no number attached will carry you through the week without friction.