RedSim does not provide a truly unlimited data eSIM for Saint Lucia. The only plan that carries “Unlimited” in its name is the Caribbean Unlimited 7 Days plan, which gives 3 GB of high‑speed data per day and then reduces the speed to 1000 kbps for the remainder of the day, so it is not an unlimited data plan.
Travelers who need a large amount of data can choose from RedSim’s fixed data plans for Saint Lucia, such as the Global 20 GB 30 Days plan, the St. Lucia 20 GB 30 Days plan, the Global 10 GB 30 Days plan, the Caribbean 10 GB 30 Days plan, or the St. Lucia 10 GB 30 Days plan. These plans offer 10 GB or 20 GB of high‑speed data for 30 days, with the Global options supporting 5G and covering many countries, and may be more cost‑effective for most travelers.