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Official Languages: French

English is not widely spoken. French is the main language used for administration and tourism, and local languages are also commonly spoken in daily life. Basic French is very helpful for independent travel.

Mobile Network: Mobile coverage is generally good around main populated areas such as Mamoudzou and nearby towns, but speeds and reliability can drop in more remote coastal or inland areas. Data service is usually adequate for maps and messaging in towns.

Roaming/SIM/eSIM: If your home provider includes France or overseas France in roaming, roaming may be the simplest option for a short trip, but confirm charges specifically for Mayotte before travel. For longer stays, a local SIM is commonly cheaper for data and local calls if your phone is unlocked. eSIM availability depends on your provider and device; it can be convenient, but local physical SIM options may still offer better value or easier top-ups on the island.

Cards are accepted in many supermarkets, hotels, and some restaurants, but small shops, markets, taxis, and informal services commonly prefer cash. Carry some euros in cash, especially outside main urban areas.

Tipping is not as formalized as in some major tourist destinations. In restaurants, service is often included or prices already reflect service, so extra tipping is optional. Rounding up the bill or leaving a small amount for good service is appreciated but not usually expected. For taxis, rounding up is common if the service was helpful.

Plug Type: Type C and Type E

Voltage: 230 V, 50 Hz

Adapter: If your devices use European two-pin plugs, typically no adapter is needed. Travelers from the UK, US, and other non-European plug regions usually need an adapter.