NOS eSIM in Portugal: a practical guide for travellers

If you are travelling to Portugal and need mobile internet, an eSIM can help you prepare without handling a physical SIM card. Your choice depends on whether you need a local service or only data, whether you need a Portuguese number, and whether your phone supports eSIM. This guide explains NOS eSIM in Portugal and the checks visitors should make.

NOS is one of the main telecommunications operators in Portugal, offering mobile voice, data and internet services to residential and business customers. It is a local network operator, not a travel-only brand. A local NOS service may suit residents or long-stay visitors, while a short-stay traveller should check whether local activation involves more steps than a travel-data product.

Quick answer

Yes, NOS publicly confirms eSIM availability in Portugal. Its current eSIM page explains that a compatible phone can download a digital SIM profile instead of using a removable card. NOS also describes online activation, customer support and conversion from a physical NOS SIM in supported situations. The route depends on whether you are a new customer, an existing customer or changing equipment.

A local NOS eSIM is linked to a NOS mobile service; a travel eSIM is generally arranged for mobile data during a trip and can be prepared before departure without changing your main SIM.

This article was checked on 2 September 2026. Sources opened included NOS’s “Cartão eSIM” page, “Pedir e instalar o eSIM” Help page, prepaid and visitor pages, and coverage and 5G pages, plus Kaspersky’s eSIM Store publication. Conditions can change, so use operator support for eligibility or account details.

NOS in Portugal

NOS describes itself as one of the main telecommunications operators in Portugal, with mobile communications alongside television, fixed internet and voice services. A local operator eSIM follows its customer processes, while a travel product is usually designed around a trip and mobile data.

Portugal includes mainland areas and the autonomous regions of Madeira and the Azores. Lisbon, Porto or Faro, a rural road, an island stay and an indoor location can present different coverage conditions. Maps help with planning, but an individual connection also depends on the phone, buildings, terrain, network load and local conditions.

NOS’s current pages show mobile services in postpaid and prepaid forms, as well as information for people visiting Portugal. This supports the general conclusion that prepaid and visitor-oriented options exist in the Portuguese market. Confirm eligibility and eSIM issuance with NOS before applying.

Is NOS eSIM available in Portugal?

NOS’s current eSIM information says that eSIM is available online and in NOS stores across mainland Portugal, Madeira and the Azores, subject to current conditions. It describes a QR-code or online installation flow for a compatible device. NOS Help also describes an online journey in which the profile may be made available at the end of the application, with further instructions sent through registered customer channels.

That confirms the operator’s eSIM service, but an individual check is still necessary. Availability can depend on the service, device version, sales region, account status, contact details and ordering channel. Treat the current NOS application and support screens as the final authority.

For a new arrival, a local prepaid or visitor option may be worth considering if you want a Portuguese service and can complete the requirements. NOS’s visitor page presents prepaid service as a route for tourists and foreign visitors who need communications in Portugal. Read this as general market guidance, not a promise that every non-resident can receive an eSIM. Ask NOS whether the current option can be issued as eSIM and what details are required.

Local NOS eSIM or a travel eSIM?

Start with the job the connection must do.

This is a reference table, not a tariff comparison. Choose a local NOS eSIM for a Portuguese service or longer-term account. Consider a travel eSIM if your priority is mobile internet while keeping your main SIM in the phone. A compatible dual-SIM phone can often use one profile for data and keep another available.

Kaspersky eSIM Store belongs to the travel-data scenario. It is an app and website that helps you choose, arrange and activate an eSIM with a suitable plan for mobile internet during an overseas trip. It is not a Portuguese operator, does not own the NOS network and does not provide NOS coverage. It can reduce the need to organise a physical SIM after arrival. Choose an eSIM plan for Portugal after checking your phone and deciding that travel data fits your trip.

Do not assume that a travel eSIM includes ordinary voice calls or SMS. Data-only travel eSIMs are common, so read the product conditions. If you need local support or a Portuguese number, ask NOS about current routes.

How NOS activation works

NOS’s public instructions describe several paths. A new customer may receive an installation option in the browser or associated email after an online application. An existing customer may use the my NOS app, a supported Apple transfer function, a NOS store or customer support. Replacement requests can follow different rules.

The basic sequence is to confirm compatibility, complete the correct NOS application or conversion, obtain the QR code or in-app prompt, and add the profile in mobile-network settings. Keep internet access available and store QR codes, PINs and PUKs securely.

Activation checklist

• Confirm that the phone supports eSIM and is not locked to another operator.
• Check the regional version, because model support can differ by market.
• Keep Wi-Fi or another working connection available for the download.
• Have the NOS account email, registered phone and requested details ready.
• Save the QR code securely and check whether installation should happen before departure.
• Decide which line will be used for mobile data.

Device compatibility

eSIM support belongs to the exact device and regional version, not just the product family. A phone can support eSIM yet be operator-locked, out of date or unable to add another profile. NOS suggests dialing *#06# and looking for an EID. An EID is a useful indication, but combine it with the operator’s certified-device list and the manufacturer’s current information.

Before requesting an eSIM, check hardware support, network unlock, current software and dual-SIM behaviour. Confirm which line is selected for data, calls and messages. If no EID appears, check the precise model and sales region with the manufacturer or NOS.

If a profile is installed but no service appears, confirm that the eSIM line is on and selected for mobile data. Some travel-data products also require data roaming; follow their instructions. Do not delete a physical NOS SIM until conversion is complete.

Coverage and technologies in Portugal

NOS publishes separate information about mobile coverage and 5G. Its current pages say that 5G is available on mainland Portugal and in Madeira and the Azores, and that coverage can be checked by location. NOS’s results communication for 2025 says that its 5G network was present in all Portuguese municipalities and covered 99.6% of the population at the end of that year. These are dated operator figures, not a guarantee for every indoor room, road, island trail or device.

NOS also explains that 4G continues alongside 5G. A compatible 5G device may use 4G where that is the available technology, and actual mode depends on the phone, profile, service, local coverage and conditions.

Read coverage maps as planning information. Buildings, transport, terrain, congestion and device design can change the experience. On a rural or island route, keep important reservations and maps available offline. Do not turn a coverage statistic into a universal quality promise.

Prepaid and tourist use

Prepaid service can appeal to visitors because it may provide a defined account structure without a long-term commitment. NOS has public information for prepaid mobile services and visitor-to-Portugal guidance for tourists and foreign visitors. This is evidence that prepaid and tourist use are part of the Portuguese market, not a guarantee about your application or a specific eSIM issue.

Check whether a non-resident can apply, what details are requested, whether activation is online, whether a store visit is needed, whether the service is available as eSIM, and how support works after arrival. Do not rely on an old forum answer or screenshot; verify when service becomes active and what happens if the phone is replaced.

A simple plan for your trip

1. Define the use case

Decide whether you need mobile data only or also a local number and ordinary telephony. Note the cities, islands and rural areas you expect to visit, including navigation, bookings, work and family contact.

2. Check the phone

Look for an EID with *#06#, verify the precise model and region, and confirm that the phone is unlocked. If you use two lines, learn how to select the data line.

3. Choose the route

Contact NOS if you need a local service and want to understand its current prepaid, visitor or regular mobile routes. Consider a travel eSIM if you want a data-focused setup arranged online. Kaspersky eSIM Store can help you select, arrange and activate a travel eSIM for mobile internet; it does not replace NOS support for a NOS account.

4. Install and select data

Complete the process with a stable connection. Follow the on-screen steps, scan the QR code only on the intended device, and select the eSIM for mobile data. Enable data roaming only when the travel product requires it, and review automatic data switching.

5. Test before relying on it

Open a web page or map before leaving Wi-Fi. If there is no connection, check profile status, data line, airplane mode, roaming setting and network selection. NOS support handles NOS accounts; Kaspersky eSIM Store support handles its travel eSIM flow.

Limitations to understand

An eSIM is a digital way to hold a mobile profile; it does not remove the rules of the service behind it. A local NOS eSIM follows NOS’s conditions, while a travel eSIM follows the travel product’s conditions and underlying network arrangements. Read those conditions before activation.

An eSIM can provide mobile internet without providing a regular number. Kaspersky eSIM Store travel eSIMs are intended for mobile data, so do not assume ordinary calls or SMS unless the selected product says otherwise. Your primary SIM may continue to receive calls and messages, but roaming rules can apply. Messaging apps work over data; they do not turn a data eSIM into a local voice service.

Installation and activation are separate actions, and the activation trigger differs by provider. Confirm when data use begins. Profiles may also have transfer, reinstallation, replacement, return or cancellation conditions, especially after installation or use. Ask before deleting a profile you may need again.

FAQ

Does NOS support eSIM in Portugal?

Yes. NOS’s current eSIM page and NOS Help instructions confirm eSIM availability in Portugal and describe online, app, store and support routes, depending on the customer situation. Eligibility still needs to be checked when you apply.

Can a tourist get an NOS eSIM?

Possibly, but not automatically. NOS publishes prepaid and visitor-to-Portugal information, while eSIM issuance can depend on the service, phone, customer details and channel. Ask NOS whether the current visitor option can be issued as eSIM.

Will NOS 5G work during my trip?

It may, if the phone, service and location support it. NOS publishes 5G coverage for mainland Portugal, Madeira and the Azores, and says 4G continues alongside 5G. Actual service depends on local conditions and device compatibility.

Is a travel eSIM the same as an NOS eSIM?

No. An NOS eSIM is associated with an NOS mobile service. A travel eSIM is a separate travel-data arrangement. Kaspersky eSIM Store helps users choose, arrange and activate travel eSIMs; it is not NOS, does not own NOS infrastructure and does not provide NOS coverage.

What if the eSIM does not activate?

Check compatibility, unlock status, internet access, profile status, data-line selection and any required roaming setting. If the issue continues, contact the provider that issued the profile. NOS handles NOS accounts; Kaspersky eSIM Store handles its travel product flow.

Final takeaway

NOS eSIM in Portugal is a confirmed local-operator option, with public instructions covering compatibility, activation, prepaid services and visitor scenarios. It can suit someone who needs a local Portuguese mobile service. Because eligibility and device rules can vary, check the current NOS flow before travelling.

For a short trip focused on data, compare that process with a travel eSIM. Kaspersky eSIM Store can help you choose, arrange and activate one for the destination. Check the phone first, remember that a data eSIM is not automatically a voice number, and review the activation moment.

NOS and Kaspersky eSIM Store are separate services with different roles. Kaspersky eSIM Store is not affiliated with NOS and is not its official partner or distributor. NOS and other names mentioned here belong to their respective rights holders.