Does my European (EU) SIM card offer free roaming in French Guiana, or should I opt for a DataESIM?

While French Guiana is an overseas department of France and technically within the EU, standard 'Roam Like at Home' (RLAH) policies from non-French EU carriers can be highly restrictive. Many operators, particularly those outside of France, implement fair usage policies that severely cap data allowances or throttle speeds to 2G/3G after a minimal threshold. For heavy data users, remote workers, and digital nomads, a DataESIM plan specifically for French Guiana provides guaranteed high-speed data, eliminating the risk of unexpected charges or degraded service.