SimOptions sells eSIMs that provide a phone number with the dialing code +33, which is France’s country code, and full voice inbound and outbound calling capability. The plans that cover French Guiana start at 20 GB for 15 days priced at $23.90 USD and go up to 120 GB for 30 days at $55.90 USD. The phone number supplied is a French national number rather than a local French Guiana (+594) number. SMS ability is not indicated in the available plan information, so if you need text messaging confirmation, be sure to verify the details directly with SimOptions.