
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 a truly unlimited data eSIM for the United Kingdom. All plans listed under the “Unlimited” branding have a particular data allowance – for example, UK Unlimited MAX offers 5GB per day for a 5‑day validity period, while UK Unlimited LITE gives 2GB per day for 15 days. After the specified daily limit is reached, the speed is throttled to 1000kbps.
Travelers looking for large data volumes can choose from fixed‑data options such as the UK Unlimited MAX 5GB/day (5 days) or longer‑term plans like Europe‑365 Days‑150GB, which provide a set data amount without the speed reduction that applies to the Unlimited‑label plans. These fixed data plans are often more cost‑effective for heavy data users.
4S eSIM does not offer any United Kingdom eSIM plans that include a phone number or SMS capabilities. All available United Kingdom eSIMs from 4S are data‑only plans, meaning they provide internet access but no built‑in voice or messaging services.
Travelers who need to make calls or send messages can use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection provided by the eSIM. These apps do not require a local phone number or SMS support to function.
4S eSIM provides 40 single‑country data plans that cover the United Kingdom and 189 multi‑country plans that include the UK in their coverage. The available packages vary in price from about $1.30 to $1, 262.28 and in data cap from 100 MB up to 500 GB. Some plans are structured around a fixed data amount, giving a single total data allowance, while others use a daily data cap that limits usage on a day‑by‑day basis.
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