Yes, esimzon provides eSIM plans that give unlimited data for Saint Barthélemy. The “Europe Unlimited” series—available for 1, 3, 5, 7, 15, or 30 days—covers Saint Barthélemy and includes 5 G connectivity with a maximum speed of 10 Mbps (10 000 kbps). These plans allow tethering, but speeds may be throttled under a fair‑usage policy, so after heavy usage the data rate could be reduced. Travelers interested in these unlimited options can purchase the desired validity period through esimzon and activate the eSIM immediately upon arrival.