
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 Portugal. All plans listed under the “Portugal Unlimited” brand give a fixed daily data allowance—such as 5GB/day for the Portugal Unlimited MAX – 5 Days plan—and reduce speed to 1000kbps once the daily limit is reached.
Customers who need a larger amount of high‑speed data can choose a fixed data plan, for example the Portugal Unlimited MAX – 15 Days plan that offers 5GB/day for 15 days or the Portugal Unlimited LITE – 30 Days plan that gives 2GB/day for 30 days. These fixed‑cap plans may be more cost‑effective for travelers who use a lot of data but do not require line‑up‑free high‑speed access.
4S eSIM does not provide a Portugal eSIM that includes a phone number or SMS capability. The provider only offers data‑only eSIM plans for the country. Travelers who need phone calls or text messages can use VoIP applications such as WhatsApp, Telegram or iMessage, which operate over the included data connection.
4S eSIM provides a range of single‑country data plans for Portugal. The total number of single‑country options offered by the provider is 36, while no multi‑country plans are listed for Portugal specifically. For all plans the price varies from approximately $1.45 to $1, 262.28, the data cap ranges from 300 MB up to 500 GB, and validity spans from 1 day to 365 days.
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