
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 true unlimited data eSIM for Singapore.
The plans that carry “Unlimited” in their name actually include a data cap—such as 3GB, 5GB, 10GB, 20GB, 30GB, or 50GB— and once the cap is reached the speed is throttled to 1000kbps.
For travelers who need more than the capped amounts without a speed reduction, 4S eSIM provides larger fixed data plans. Examples include the 50GB plan valid for 30 days or the 20GB plan for 7 days. These fixed‑data options can be more cost‑effective for heavy data users, while the “Unlimited” tier may suit those who prefer a simpler pricing label and a predictable throttling level.
4S eSIM does not offer a Singapore eSIM with a phone number or SMS capability. The provider only sells data‑only plans for this destination, so travelers cannot receive or make standard voice or text calls on the local network. For voice and messaging, users may rely on VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection; however, some destinations may block or restrict certain apps or services, so it is advisable to check that the applications you need will work in Singapore before purchasing a plan.
4S eSIM provides 56 single‑country plans and 108 multi‑country plans for Singapore. The available data caps run from 714 MB up to 50 GB, while prices range from about $1.55 to $195.83, giving travelers a wide spectrum of options to suit different data needs and budgets.
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