shibaSIM does not provide a truly unlimited high‑speed data plan for Romania. The plans that carry the label “Unlimited” all have a daily high‑speed cap, such as 1GB/day, 2GB/day or 3GB/day; once the daily allowance is reached the speed is reduced to 128kbps.
Travelers can instead select fixed data plans with larger high‑speed bundles, such as 10GB for 30 days, 20GB for 30 days or 30GB for 30 days, or choose one‑day to 30‑day plans that offer 0.5GB/day, 1GB/day, 2GB/day or 3GB/day of high‑speed data. These plans allow high‑speed usage up to the stated limit before throttling, and may be more cost‑effective for most users.