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Official Languages: English, French

English is the everyday language and is spoken throughout Guernsey. French has historic status but is not commonly used in daily visitor interactions.

Mobile Network: Mobile coverage is generally good in populated areas, towns, and main roads, but signal can be weaker in some coastal spots, inside older granite buildings, or on remote cliff paths. 4G is commonly available, while 5G availability depends on network and location.

Roaming/SIM/eSIM: If you are coming from the United Kingdom, check your provider carefully because roaming terms for Guernsey are not always the same as mainland UK use. For short stays, roaming is simplest if your plan includes Guernsey at a reasonable cost. For longer stays or heavier data use, a local SIM can be better value if your phone is unlocked. An eSIM is often the easiest middle option for compatible phones because it avoids shop visits and can be activated before arrival. Compare prices for data, calls, and any roaming charges before travel, and do not assume EU roaming rules apply.

Cards are widely accepted in hotels, restaurants, supermarkets, and many shops. Contactless payment is common. Carry some cash for small purchases, markets, rural honesty boxes, or places that may not take cards.

Tipping is modest. In restaurants, check whether a service charge has already been added. If not, rounding up or leaving around 10 percent for good service is commonly appreciated but not obligatory. In cafes, taxis, and casual settings, rounding up is typical rather than formal tipping. Hotel tipping is discretionary for helpful service.

Plug Type: Type G

Voltage: 230V, 50Hz

Adapter: Visitors from countries using Type G plugs typically do not need an adapter. Visitors from most of Europe, North America, and many other regions will usually need a Type G adapter.