Extra mobile data: what does a GB cost after your plan?
Data allowance used up: reduced speed, a paid top-up or per-megabyte billing depending on the operator. Price of an extra GB at Orange, Telenet, DIGI and Proximus, recorded on 14 October 2026.
Category
Data & usage
Roaming in Switzerland and the UK: your Belgian contract
In the UK, Proximus and Telenet apply your plan as they do in Belgium. In Switzerland, none of the three: €7.49 a day at Proximus, €4 at Orange, a €14 pass at Telenet. Rates recorded on 29 September 2026.
How many GB per month for your usage?
The Belgian mobile customer uses 11.9 GB a month and usually pays for four times more. The volume you actually need, the price per gigabyte, and what the contract charges once the allowance is empty.