TailSim offers six single‑country data plans for Serbia, with no multi‑country options available. The plans range in price between $3.99 and $71.99 and provide data caps from 1 GB to 50 GB, valid for 7 to 30 days. Some plans offer a fixed data amount for the entire validity period, while others may provide a daily data cap that is multiplied by the number of days, giving travelers flexibility to choose a package that matches their usage needs. All plans allow tethering, enabling shared data across multiple devices.