How we estimate eSIM speeds
An eSIM does not own a radio network. Where a provider names its local network partner, RoamSonar can pair that mapping with a dated public network baseline. The result is an estimate, not a promise about your phone, location or time of day.
What the estimate means
We publish an estimated download speed only when the exact plan-country network is known and an owner-reviewed baseline carries a source name, public link and update date. Unknown networks and missing baselines stay “—”. We do not infer a partner from branding, coverage maps or another country.
Two evidence layers
| Layer | Rule |
|---|---|
| Network baseline | Editorial summary of a named public report; always labeled ESTIMATE and linked to its source. |
| Traveler reports | Shown only after moderation and only at five or more published reports for the same provider and country, with sample size visible. |
Current coverage
0 plans currently have a reviewed network mapping, and 0 countries have at least one reviewed baseline. A zero is intentional: RoamSonar would rather show no number than a confident-looking guess.
Why your result can differ
Phone bands, congestion, buildings, tunnels, roaming priority, weather and the network selected at that moment can all change performance. A baseline compares context; it does not guarantee a minimum.