SeferESIM does not provide a truly unlimited data eSIM for Bulgaria. The plans that carry the word “Unlimited” in their name actually give 1GB of high‑speed data per day and reduce the speed to 1000kbps once that daily limit is reached.
Travelers who need a larger, fixed data allowance can choose from SeferESIM’s fixed data plans for Bulgaria, such as the 50GB 30‑day or 50GB 180‑day options, or the broader Europe plans that include Bulgaria, like the 100GB 180‑day or 50GB 90‑day bundles. These plans offer a set amount of high‑speed data that must be used within the specified validity period and can be more cost‑effective for most users unless they require very heavy data usage.