ZenSim does not provide a truly unlimited high‑speed data plan for Dominica. The plans that carry “Unlimited” in their names actually grant 3GB of high‑speed data per day for five days; after that amount the speed drops to 1000 kbps, so the plan is a capped, time‑limited offer rather than unlimited data.
Instead, ZenSim offers fixed data plans for Dominica. For example, the Global 40 GB plan is valid for 90 days, and the Dominica 20 GB plan is available for 15 days (or 30 days). These plans give a larger data allowance and can be more cost‑effective for most travelers unless they require very high data consumption.