
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 true unlimited data plan for Portugal. All plans marked “Unlimited” in the catalog have a defined high‑speed data allowance and specify a reduced speed of 1000 kbps once the limit is reached.
A customer seeking high‑speed data in Portugal can choose from fixed data plans instead. For instance, a 50 GB plan lasting 5 days or a 20 GB plan lasting 5 days delivers large amounts of high‑speed data before the speed is throttled. These fixed‑data options can be more cost‑effective for travelers who need a substantial amount of data without the reduced speed that follows a capped “Unlimited” plan.
4S eSIM does not provide a Portugal eSIM that includes a phone number or SMS capability. Only data‑only plans are available for Portugal. Travelers wishing to communicate can use VoIP applications such as WhatsApp, Telegram or iMessage over the data connection, but they should confirm that those apps are accessible in Portugal before purchasing a plan.
Portugal has 54 single‑country eSIM plans from 4S and 108 multi‑country plans that include Portugal. The plans range in price from about $1.42 to $195.83, and the data caps vary from 714 MB up to 50 GB, with validity periods covering 1 to 365 days. The single‑country offerings are all fixed‑data plans, while the multi‑country options include a mix of daily data caps and fixed data caps, giving travellers flexibility based on usage requirements.
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