
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 high‑speed data plan for the United Kingdom; every product listed has a specific data cap, and the plans that include “Unlimited” in their title still provide a fixed amount of data before the speed is throttled to 1000 kbps.
Travelers can choose from fixed‑data plans that range from 3 GB to 50 GB over periods from one day to 30 days. Examples include a 5 GB Unlimited 7 days plan that costs $4.45 (data at 714 MB/day with throttling after the limit) and a 50 GB Unlimited 5 days plan priced at $26.13 (10 GB/day) as alternatives that may offer a more cost‑effective solution depending on usage needs.
4S eSIM does not offer any plan for the United Kingdom that includes a phone number or SMS capability. Only data‑only eSIM plans are available from this provider for that destination. Travelers who need voice or text services can still use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but it is advisable to confirm that these services are accessible in the United Kingdom before purchasing a plan, as some destinations may block or restrict certain apps or VoIP services.
4S eSIM provides 54 single‑country plans and 108 multi‑country plans for the United Kingdom. The available options range in price from about $1.43 to $195.83 and in data capacity from 714 MB to 50 GB over validity periods of 1 to 365 days. Some plans use a daily data cap, limiting the amount of data that can be used each day, while others use a fixed data cap, giving a total amount of data usable over the whole validity period.
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