No, yaySIM does not provide an unlimited data eSIM plan for Cyprus. The available plans are fixed‑data bundles that come with a set data cap and a specified validity period. For example, the EU‑35_100_180 plan offers 100 GB of data for 180 days at a price of $100.29 USD and covers Cyprus plus 34 other countries, while the CY_50_180 plan provides 50 GB of data for 180 days at $44.51 USD and includes 5G coverage in Cyprus. Those fixed data options may be more cost‑effective for most travelers, especially those who use large amounts of data during their stay, as they give a predictable allowance and longer validity compared to pay‑as‑you‑go options.