However, once you start walking into the hills behind Trefriw, the signal deteriorates quickly to a point where a signal can usually only be found in the highest spots.
In addition to carrying a paper map, we’re fans of using O.S. 1:25,000 mapping on mobile phones, which will pinpoint your exact location at any point. The O.S. have their own O.S. Mapping app, but personally we prefer the Memory Map app. These apps use GPS, not a mobile signal, so will work wherever you go.
There is free WiFi available in the Village Hall, our assembly point.