4S eSIM eSIM Data Plans for Serbia

4S eSIM does not provide a true unlimited data eSIM for Serbia. All plans that carry the word “Unlimited” have a fixed data allowance, such as 3GB, 5GB, 10GB, 20GB, 30GB, 50GB, etc., and once that amount is reached the speed drops to 1000kbps.

Fixed‑data plans are available in a range of capacities and validity periods. For example, the 3GB plan lasts 1 day and the 10GB plan is valid for 5 or 7 days; a 50GB plan can be purchased for 5 to 15 days without a speed reduction until the data cap is reached. Choosing one of these most‑data options can be more economical than paying for a larger “unlimited” plan that still imposes a cap.

4S eSIM does not provide a Serbia eSIM that includes a phone number or SMS capability. The provider offers only data‑only plans for Serbia, so travelers cannot receive calls or text messages via a local number. However, popular VoIP applications such as WhatsApp, Telegram, and iMessage can be used over the data connection for voice and text communication.

4S eSIM lists 54 single‑country plans for Serbia and 108 multi‑country plans that include Serbia in their coverage. The provider offers primarily fixed data‑cap plans, but there are also daily‑cap options for travelers who only need data for a few days. Overall, the plans cover a price range from about $1.56 to $195.83 and data caps from 714 MB to 50 GB.