
4S eSIM is a new global connectivity brand built by a team with strong experience in the telecommunications industry. Our partners provide direct network access to multiple mobile operators worldwide, giving us first-hand network resources and the ability to offer highly competitive pricing. We aim to make staying connected abroad simple, reliable, and affordable for everyone — from frequent travelers and digital nomads to business professionals and international students. With instant activation, flexible regional and global data plans, and no need for physical SIMs or complex KYC verification, 4S eSIM delivers a truly borderless mobile experience.
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Data plans for this provider are automatically updated. While we strive to keep the information accurate, we cannot guarantee its completeness or accuracy. Please confirm all details on the provider's official website or app before purchasing.
4S eSIM does not provide an unlimited data eSIM for the Balkans. Instead, the provider offers fixed data plans such as the Balkans+20GB 10‑day and Balkans+20GB 30‑day options, both priced at $31.08 USD and covering Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Montenegro, North Macedonia, Serbia and one additional country. Choosing a fixed data plan can be more cost‑effective unless a traveler is an extremely heavy data user.
4S eSIM does not provide a phone number or SMS capability for its eSIM plans in the Balkans; only data‑only eSIMs are offered. Travelers can use VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection to make calls and send messages without a phone number.
The service offers a Balkans+ plan that covers Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Montenegro, North Macedonia, Serbia, and Kosovo. The Balkans (5+ areas)/Day plan covers Albania, Bulgaria, Croatia, Montenegro, North Macedon, and Serbia. In addition, the Global and Global (120+ areas) plans also include these same Balkan countries in their coverage areas.
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