
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 offer a truly unlimited data eSIM for East Asia. Plans labeled “Unlimited” provide a high‑speed daily allowance ranging from 2GB to 5GB per day; after the daily limit is reached, the speed is throttled to 1000kbps.
For travelers who need a fixed amount of high‑speed data, 4S eSIM offers fixed‑data plans such as the Asia+ 20GB plan for 30 days, which delivers 20GB of high‑speed data without daily caps. Choosing a fixed data plan can be more cost‑effective unless a user requires very heavy data usage.
4S eSIM does not offer an East Asia eSIM plan that includes a phone number or SMS capability. The provider only sells data‑only eSIMs for the region, and travelers who need voice or text communications can rely on internet‑based messaging apps such as WhatsApp, Telegram, or iMessage to make calls and send messages over the data connection.
4S eSIM offers several plans that cover East Asian markets. All of the covered East Asian countries—China, Hong Kong, Japan, South Korea, Taiwan and Macau—appear on the same list of plans, including Asia (20 areas) /Day, Asia+, Asia (12 areas) /Day, Asia‑20, Global, Global (120+ areas), and Global 139; none of the plans extend to Mongolia.
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Discover some of the most popular eSIM brands offering plans for East Asia