5G Standalone vs NSA in Belgium: the real 5G and its price

Standalone 5G is the only 5G running on a 5G core network. Everything else, including the vast majority of what displays as « 5G » on Belgian screens, is non-standalone 5G sitting on a 4G core. One Belgian network broadcasts the first, and its entry ticket costs 49.99 € a month.

The icon is identical in both cases. That is the whole problem.

Two architectures, one icon

Non-standalone 5G, shortened to NSA, adds 5G radio carriers on top of a 4G core network that stays in charge. The phone first latches onto a 4G cell, called the anchor, then aggregates 5G above it. Standalone 5G, shortened to SA, replaces that core as well.

Nothing on screen signals it.

The choice was not an engineering whim. Deploying NSA let operators reuse a fully amortised 4G core, switch on 5G at existing sites by changing only antennas and radio cards, and serve millions of subscribers from day one with handsets designed for that architecture, which is why the whole of Europe started there rather than with standalone. Standalone requires a new, virtualised core and a gradual migration of subscribers. So it arrives five years after the radio.

One direct and rarely written consequence: on an NSA network, voice still travels over 4G, as VoLTE, and so does signalling. 5G there is only a data pipe grafted onto previous-generation plumbing.

What does non-standalone 5G change in the speed you actually measure?

Less than people assume on download speed, a lot on everything else. Peak speed depends first on the frequency band in use and on how much spectrum the operator holds, not on the core architecture. An NSA network with plenty of 3.6 GHz will post better figures than a standalone network confined to the 700 MHz band.

The standalone gain shows up elsewhere: in latency, which drops below 10 ms where NSA remains hostage to 4G core response times, in voice carried natively over 5G, and in slicing the network into independent virtual networks, something a 4G core cannot deliver.

The battery line deserves a pause, because it contradicts a common assumption. On NSA, the handset maintains a 4G connection and a 5G connection at the same time. Two active transmitters, two receive chains, and a battery that drains faster than on 4G alone. Standalone removes that duplication.

Which operators actually broadcast standalone 5G in Belgium?

Proximus, and nobody else. Since April 2026 the operator has sold its standalone network as 5G+, with voice native to 5G, network slicing and hardened security. Orange and Telenet remain non-standalone across their whole footprint.

The contrast with NSA coverage is striking. In the latest published regulator figures, all three Belgian networks reach or nearly reach 100 % outdoor 5G coverage: the deployment measured by the BIPT, the Belgian telecom regulator, shows a 5G radio layer that is essentially finished, while standalone is still on its first operator and its first handsets.

Belgium has finished the easy half of the job and is starting the second.

Do you need a specific smartphone for standalone 5G?

Yes, and it is the most underestimated constraint on the subject. A handset sold as 5G-capable in 2022 or 2023 almost always handles NSA; standalone depends on software support and on network-by-network certification that product sheets never spell out.

At the Belgian launch, five conditions had to be met at once:

• Be on the Proximus network, the only Belgian network broadcasting standalone so far.
• Hold the Mobile Unlimited plan, the only one in the range that unlocks 5G+.
• Have a dedicated 5G+ eSIM, separate from the ordinary SIM card of the plan.
• Use a Google Pixel 9 or 10, the only two models supported when the service opened, with the operator saying it was working with manufacturers to widen the list.
• Be inside 5G+ coverage, which does not match the full NSA 5G footprint.

Four of those five conditions are contractual or commercial. Only one is technical.

The Belgian price of standalone 5G, host network included

This is where the subject stops being technical. On the Proximus network, the same antennas carry at least four different labels, and only one opens the standalone door.

Price lists checked on 15 September 2026, thirteenth-month price, host network shown. An MVNO here is a brand that rents a host operator's antennas rather than owning any.

The calculation that stings: between Mobile Vikings unlimited at 25 € and Proximus unlimited at 49.99 €, the gap reaches 24.99 € a month, or 299.88 € a year, for two SIM cards connecting to the same masts with the same data allowance. Part of that gap buys extra speed. The rest buys a core network architecture that no commercial sheet ever prices.

One note on the running promotion, because it moved. On 10 September 2026, Proximus advertised Mobile Unlimited at 34.99 € for six months; on 15 September 2026, the same offer reads 34.99 € for twelve months, for any new subscription until 30 September 2026. Either way, the price that matters is 49.99 €, and it is the thirteenth-month one.

Should you wait for standalone 5G before signing a contract?

No, for three reasons that stack up.

The first is usage. Reading mail, watching video, tethering at a station: none of these tells NSA from standalone, because none of them is limited by core network latency. The applications that genuinely benefit are augmented reality, demanding cloud gaming and real-time professional uses.

The second is hardware. If your handset is not on the short list of supported models, the most expensive plan in the catalogue will hand you NSA, exactly like an 8 € plan does.

The third is Belgian law, and it is the most useful. A Belgian mobile contract can be cancelled free of charge after six months, keeping your number. Signing today with a cheap brand commits you to nothing lasting, and the migration to standalone will happen through a new SIM and a new handset rather than a new contract.

Three networks, fifteen labels, one 5G core

The lesson goes beyond today's subject. The network carrying your signal and the brand billing you are two different things, and what a brand lets you do with the antennas it rents is written in its terms, never on its host's coverage map. Our table of Belgian brands and their host networks works through those attachments one by one, and measuring at your own address remains the only proof of what reaches you.

On price, the 5G plan ranking sorts offers on the thirteenth-month rate and never on the headline rate, and the comparison tool lines them up criterion by criterion.

Standalone will reach everyone eventually. It simply is not a buying argument yet.

Sources: BIPT, 5G deployment in Belgium, mapping and network quality, consulted on 15 September 2026; Proximus press release on the 5G+ launch and Mobile Unlimited product page, consulted on 15 September 2026; price surveys from Astel, CallMePower and Selectra on 10 and 15 September 2026.