Are international roaming charges applicable in Belgium for UK or US SIM cards with DataESIM?

The incidence of roaming fees in Belgium for UK or US SIM cards depends on your nationality and carrier terms. As Belgium is within the EU, 'Roam Like at Home' applies to EU citizens. However, for UK citizens post-Brexit, many UK carriers (e.g., O2, Vodafone, Three) have reintroduced daily roaming fees, typically £2-£6. US carriers (e.g., AT&T, T-Mobile) will levy their standard international roaming charges. DataESIM provides an independent, cost-effective data solution that bypasses these roaming complexities, offering transparent, high-volume data for Belgium.