230V / 50 Hz AC power is standard throughout the Nordic and Baltic countries. The wall outlets are compatible with Type C (two-pin) and Type F (Schuko) plugs.
You can purchase converters and adapters at airports as well as at most electronics stores. Some hotels may have an adapter available to borrow from the reception, but please do not rely on this if you need to charge technical devices. A universal adapter is recommended for travellers from outside Europe.
Yes. Mobile coverage is excellent in cities and towns, though some remote Arctic regions may have limited service. Roaming works in most Nordic and Baltic countries, but check with your provider before travelling.
Exception: There is no cellular coverage at sea for most parts of the Svalbard expedition cruise.
In Scandinavia, Finland and Iceland, most locals speak excellent English, and German is also commonly spoken in the tourism sector.
In the Baltic countries, English and (to a lesser extent) German are widely used in hotels, restaurants and travel services, but are less commonly spoken in more rural areas.