Reunion

Basics
Réunion, or in French: La Réunion, is an island and region of France in the Indian Ocean, east of Madagascar and southwest of Mauritius. The island became a French overseas department in 1946 and as such later an outermost region of the European Union and part of the Eurozone. The 2,511 km2land area is inhabited by around 850,000 people.

Three providers operate in Réunion: The French overseas departments are regulated by Arcep, the national French regulator. 2G is on 900 MHz and 1800 MHz, 3G on 2100 MHz. Arcep released licenses for 4G/LTE in 2016 to be started in 2017 on 800 MHz, 1800 MHz, 2100 MHz and 2600 MHz. A 4th license was awarded to ZEOP Mobile.
 * SRR (by SFR)
 * Orange Réunion
 * Only (by Outremer Télécom, soon: Free mobile)

EU regulation
Réunion is part of the European Union and EU/EEA roaming regulations apply.