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

The best Belgium eSIM gives you Proximus, Orange and Base coverage without a roaming bill. Proximus runs the country's leading 5G network with city-wide coverage in Brussels and Antwerp, and because Belgium is small, flat and densely populated, coverage is consistently strong everywhere a visitor goes. Plans are prepaid with no contract and no roaming surprises, your QR code arrives by email within seconds, every plan includes free mobile hotspot, and there's a 7-day money-back guarantee. One honest steer: if your trip also takes in Amsterdam, Paris or Cologne — each under two hours by train — the Europe regional plan is the better product, because a Belgium-only plan stops at the border.

Getting online in Belgium takes about two minutes. Confirm your phone supports eSIM — iPhone XS (2018) and newer and most Android flagships from 2020 qualify. Choose your Belgium 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 when you reach Brussels Airport or Midi station and turn on Data Roaming for that line only. If you're arriving by Eurostar or Thalys, switch it on after you cross into Belgium rather than before.

Belgium is compact and Wi-Fi is everywhere, so most visitors need very little. For maps, messaging and email, roughly 300 MB a day is plenty — a 3 GB plan covers a week across Brussels, Bruges and Ghent, and a long weekend often uses only 1–2 GB. Heavier users adding photos, social media and video calls should look at 5 GB. Coverage is not the constraint here: Brussels Metro has 4G in every station and tunnel, the Thalys, Eurostar and ICE corridors keep signal along the route, and the Belgian coast including the coastal tram is well covered. Use the calculator above to size your plan and top up if you run low.

Flysimio runs as a second line beside your usual SIM, so you keep your home number for calls and texts while your Belgian data flows over the eSIM — standard dual-SIM behaviour on iPhone XS and later and most Android phones from 2018. After installing, 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 Belgian networks, with no roaming fees. Keep your home SIM on for messages and calls, or switch it off to avoid your own carrier's charges. If you're unsure about your model, the compatibility page confirms it before you buy.

Every Flysimio Belgium plan includes mobile hotspot at no extra cost and without throttling, so you can tether a laptop or tablet or share with a travel companion — useful in a country where a lot of visitors are there for work as much as for Bruges. As a data-only eSIM it has no Belgian phone number, but WhatsApp, FaceTime and Google Meet handle calls and messages over data, and your home number stays reachable on your primary SIM. Belgium is heavily card-based, so a working data connection covers most of what you'd otherwise want a local number for.

For a long weekend in Brussels and Bruges, the 1 GB / 7-day plan is the economical choice. For a week or more taking in Ghent, Antwerp, Leuven and the coast, a 3–5 GB plan gives you room without watching a meter, and there's a 20 GB option for anyone working from Brussels for a month. Because Flysimio gives you six months to activate, you can buy before you leave and validity only starts when your eSIM first connects in Belgium. If your itinerary crosses into the Netherlands, France or Germany at any point, compare the Europe regional plan first — it will almost certainly work out simpler.