RedSim does not provide a truly unlimited data eSIM for Montserrat. The only plan that carries “Unlimited” in its name is the Caribbean Unlimited 7 Days, which offers 3GB of high‑speed data per day and then reduces the speed to 1 Mbps for the remainder of the day, so it is not an unlimited plan.
Travelers who need a fixed amount of high‑speed data can choose from RedSim’s fixed data plans for Montserrat, such as the Global 20GB 30 days plan or the Montserrat 20GB 30 days plan. These plans give a set data allowance that must be used within 30 days and can be more cost‑effective for most users unless very heavy data consumption is required.