ZenSim does not provide a true unlimited‑data eSIM for Sint Maarten. The plans that carry “Unlimited” in their name actually offer a fixed amount of high‑speed data – 3 GB per day for five days – after which the speed is throttled to 1000 kbps.
If a large data allowance is what you need, ZenSim offers fixed‑data options such as the Global 40 GB plan valid for 90 days, the Global 20 GB plan also valid for 90 days, or the Caribbean+ 20 GB plans with 15 days or 30 days validity. These plans give you a fixed size of high‑speed data and can be more cost effective than a high‑usage unlimited plan.