Zwitchy does not provide a truly unlimited, high‑speed data eSIM for Montserrat. The plans that carry “Unlimited” in their name offer 1GB of high‑speed data per day; once that daily amount is used the speed is throttled to 1000kbps, meaning the plan is a fixed‑data offering with a reduced‑speed fallback.
Alternative fixed data plans are available, such as the Montserrat · 30 GB · 30 days plan for $223.00 USD or the Montserrat · 20 GB · 30 days plan for $151.50 USD. These options give a larger, hard‑limit data allowance without the daily speed reduction, and may be more cost effective for most travelers unless extremely heavy data usage is expected.