
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 any truly unlimited data plans for Singapore. All of its Singapore‑only offerings have a fixed data allowance. For example, the Singapore 50GB – 30 Days plan supplies 50GB of high‑speed data for 30 days, while the Singapore 20GB – 30 Days plan gives 20GB for the same period; both are fixed‑cap alternatives that can be more cost‑effective for most travelers.
Some plans carry the word “Unlimited” in their name, such as the Singapore Unlimited STANDARD – 5 Days, but they actually provide 3GB per day with a reduced speed of 1000 kbps once the daily quota is reached. Because the data is capped, these are not truly unlimited high‑speed plans. Travelers who need continuous high‑speed data without caps must choose a fixed‑data plan that best matches their usage.
4S eSIM does not provide Singapore eSIM plans that include a phone number or SMS capability. Only data‑only eSIMs are offered for Singapore. Travelers who need voice or messaging can use VoIP apps such as WhatsApp, Telegram, or iMessage over the data connection.
4S eSIM offers a mix of single‑country and multi‑country plans for travelers in Singapore. The provider lists 39 single‑country plans that are limited to Singapore only, and 131 multi‑country plans that include Singapore along with other destinations. In addition to the coverage types, there are 20 daily data‑cap plans and 150 fixed data‑cap plans available. Prices for all plans range from about $1.30 to $329.64, while data caps vary from 100 MB up to 50 GB, giving a broad spectrum of options for different usage needs.
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