eSIMCard does not provide a truly unlimited data eSIM for Mayotte. The plans labeled “Unlimited” all come with a fixed data allowance – for example, the Unlimited eSIM Data For 1 Days plan gives 1GB, while the Unlimited Plus eSIM Data For 1 Days plan gives 2GB, and the daily‑rate plans offer 1 GB/day or 2 GB/day for any chosen duration. After the allocated data is used, the speed is throttled to 500 kbps for the 1 GB plans and to 2000 kbps for the 2 GB plans, so the high‑speed data is not truly unlimited.
If a higher data volume is required, eSIMCard offers fixed data plans such as the 35 GB Data & Unlimited Minutes plan valid for 30 days at $31.39 USD, the 60 day 50 GB plan at $210.12 USD, or the 30 day 40 GB plan at $146.44 USD. These plans provide larger, unthrottled data allowances and may be more cost‑effective for travelers who need substantial data usage.