Family mobile plans in Belgium
A household can either group its lines with one operator to obtain a multi-SIM discount, or take each line separately from whichever operator suits that person best. Which wins depends entirely on how different the profiles are.
| Provider | Plan | Price | Key points | View plan |
|---|---|---|---|---|
 YoinPartner Orange Belgium |
DataLover 150 GB | €21/month |
| View plan |
 Mega (télécom)Partner Proximus |
Mega Mobile 120 GB | €18/month |
| View plan |
 BASECheapest Telenet |
BASE 15 | €15/month |
| View plan |
 ProximusPartner |
Mobile Maxi | €21.99/month |
| View plan |
ProximusPartner |
Mobile Unlimited | €34.99/month |
| View plan |
 Orange BelgiumPartner |
Mobile Large | €21/month |
| View plan |
 Hey!Partner VOO |
hey! mobile XL | €22/month |
| View plan |
Orange BelgiumPartner |
Mobile Unlimited | €30/month |
| View plan |
 Mobile VikingsPartner |
Unlimited Basic | €25/month |
| View plan |
Mobile VikingsPartner |
Unlimited Fast | €30/month |
| View plan |
Mobile VikingsPartner |
Unlimited Superfast | €35/month |
| View plan |
BASE Telenet |
BASE 20 | €20/month |
| View plan |
BASE Telenet |
BASE 29 | €29/month |
| View plan |
BASE Telenet |
BASE 39 | €39/month |
| View plan |
 VOO |
Solo 300 GB | €39/month |
| View plan |
 Telenet |
Mobile Unlimited | €41/month |
| View plan |
Prices and features surveyed on August 31, 2026. They may have changed since. Always check the offer on the provider’s website before signing up.
What a multi-SIM discount is really worth
The discount is applied per additional line, on the operator's own prices. That is the part people miss: the reference point is not the market, it is that operator's grid.
Where the operator is already competitive, the discount is real money. Where it is not, a discounted expensive plan can still cost more than an undiscounted cheap one elsewhere.
Do the arithmetic in euros for your actual lines, at the price applying after any promotional period. Percentages hide too much here.
One bill, one due date, one person liable
A grouped account has one holder, and that person is liable for the whole bill regardless of who used what. In a family that is usually fine; between adults sharing a household it is worth thinking about.
The practical benefit is real: one direct debit, one renewal date, one contact for problems, and usually a single app showing each line's consumption.
The practical cost is that everything moves together. Leaving means moving every line at once, which is more friction than moving one.
Three checks before grouping
Check whether each line's allowance can differ. Some Belgian family formulas impose the same plan on every line, which serves a household with a teenager and a light-using grandparent badly.
Check whether data can be shared across lines or is allocated per line. Shared allowances suit uneven usage; per-line allowances do not.
And check what happens when one line leaves — whether the discount on the remaining lines survives, and whether the departing line can be ported out without disturbing the others.
Our verdict
Group when the profiles are similar, split when they are not. A multi-SIM discount is calculated on the operator's own list prices, so it can be worth less than simply choosing the right plan for each person. Price both scenarios on the actual usage of each family member, not on the number of lines.
Frequently asked questions
Is a family mobile plan cheaper in Belgium?
It depends on how similar the profiles are. Grouping pays when everyone needs roughly the same thing; splitting pays when they do not, because a multi-SIM discount is calculated on one operator's own prices rather than on the market.
Can each line have a different allowance?
At some Belgian operators yes, at others no — several family formulas impose the same plan on every line. That serves a household with a heavy-using teenager and a light-using grandparent badly, so check before grouping.
Who is liable for a grouped bill?
The account holder, for the whole amount, regardless of which line generated it. Within a family that is rarely an issue; between adults sharing a household it is worth deciding deliberately rather than by default.
What happens if one line leaves?
That depends on the contract: check whether the discount on the remaining lines survives and whether the departing number can be ported out without disturbing the others. Both are worth confirming before grouping.