MeSIM does not provide a truly unlimited data eSIM for Ireland. All of its Ireland‑covering plans have a fixed high‑speed data allowance that is capped each day, after which the speed is throttled to a lower rate. For example, a 3‑day plan offers 500MB/day, a 3‑day plan offers 1GB/day, a 5‑day plan offers 2GB/day, and a 3‑day plan offers 3GB/day.
Travelers who need more data can choose from MeSIM’s fixed data plans, which give large daily allowances for a set number of days. Examples include a 3‑day plan with 3GB/day, a 5‑day plan with 2GB/day, a 10‑day plan with 1GB/day, or a 30‑day plan with 500MB/day. These fixed plans can be more cost‑effective for most users unless they require an unlimited data experience.