It is limited to the coast. You will have excellent 4G/LTE/5G coverage in the main coastal towns: the capital Cayenne, Kourou (home of the Guiana Space Centre), and Saint-Laurent-du-Maroni. However, 90% of French Guiana is inaccessible Amazon rainforest. Once you travel inland (e.g., to Saül or Maripasoula), you should expect no signal. Download offline maps.
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Will I have internet coverage in the Amazon rainforest or just the coast?
Updated April 22, 2026
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