Staying connected and enjoying unlimited data is easy with the best eSIM for Portugal. You could always buy a Portuguese SIM card, but why would you? An eSIM does the same job without the physical install, and you can set it up before you even leave home.
A trusted eSIM for Portugal gives you peace of mind: unlimited internet, social media and VoIP as normal, and with one provider here, calls and texts too. Worth knowing if you’re flying in from the US, the UK or Canada: your domestic plan won’t follow you, and roaming is billed at international rates. EU visitors keep their bundle under roam-like-at-home rules. We field-tested over twenty providers in 2026, and these five made the cut.
Best eSIM for Portugal: Summary
Best eSIM for Portugal: Prices, Networks and Data Compared
The five side by side, with promo codes applied:
| eSIM | Best for | Starting price | Unlimited data | Network | Calls & SMS | Promo code |
|---|---|---|---|---|---|---|
| Ubigi | Best overall | $6 / 3 GB / 30 days | $24 / 7 days, $48 / 30 days | 4G/5G | N/A | GIZMODO (-10% first order) |
| Saily | Security and value | $3.39 / 1 GB / 7 days | $29.74 / 10 days | LTE/5G | N/A | GIZMODO (-15% all plans) |
| Holafly | Uncapped unlimited data | $3.90 / day | Every plan (from $3.90) | NOS + Vodafone (5G) | N/A | N/A |
| Airalo | Cheap 5G data | $4 / 1 GB / 3 days | $10.50 / 3 days, $61 / 30 days | 5G only | N/A | N/A |
| aloSIM | Calls and SMS | $4.50 / 1 GB / 7 days | $35 / 10 days | 4G/5G | Yes, international number | N/A |
Best eSIM for Portugal: Top 5 Picks for Any Budget
A reliable eSIM for travelers needs speed, coverage and flexible plans. We compared all five on exactly that, plus tethering and plan length, and they suit every budget, starting at a few dollars.
1. Ubigi
Pros
- Cheapest unlimited data
- The fastest eSIM here
- Unrestricted data sharing
- Smart IP feature
- 24/7 support
Con
- No calling or SMS
Ubigi is our favorite eSIM for Portugal, with a tremendous unlimited data plan at $24 for 7 days. Longer options hold up too: 15 days cost $39 and 30 days $48, which is the cheapest unlimited month here, well under Holafly’s $74.90 and Airalo’s $61. For extended stays, Ubigi also sells monthly and annual plans that renew automatically, with the data credits refreshing each period.
Our review of Ubigi praised its speed worldwide, and Portugal is no exception, with reliable 5G for bandwidth-hungry activities. Connections are encrypted for an extra layer of security, and activation is a QR code, with the plan starting the moment you land.
Ubigi’s 24/7 support is among the best, and it works on phones, tablets and laptops, which few rivals manage. Tethering is unrestricted, so one eSIM for Portugal can serve a whole group. If you need calls or SMS, though, Ubigi has no phone numbers.
Its data and performance more than cover that gap. And you can claim a 10% discount on your first purchase with the promo code GIZMODO.
2. Saily
Pros
- Cheapest entry plan at $3.39
- Handy data saver and ad blocker
- Airport lounge access in the app
- Blocks malicious sites
Cons
- Unlimited plans throttle after 5 GB a day
- No Portuguese phone number
Saily starts at $3.99 for a gigabyte over a week, or $3.39 with the GIZMODO code, which makes it the cheapest way onto a Portuguese network. The security layer is what you’re really buying: an ad blocker that also saves data, 115 virtual locations to hide your whereabouts, and malicious site blocking so you can browse safely abroad.
The best seller is 10 GB for 30 days at $16.99, which the code brings to $14.44. Unlimited data runs $34.99 for 10 days, or $29.74 discounted. Before you take it, know that the unlimited plan gives you 5 GB per day at full speed, then keeps you connected at 1 Mbps. Fine for maps and messaging, not for streaming.
Saily also offers a refund if the eSIM doesn’t work for you, plus 24/7 support and unlimited data sharing. In practice it performed well across Portugal, with consistent 5G, and we streamed and gamed without a single issue.
New in 2026: the app now sells airport lounge access and fast-track security passes at checkout, with no subscription needed, which is handy on a long connection through Lisbon. Saily was named “Rising Star” at the MVNOs World Congress in Amsterdam in June 2026. There’s no Portuguese number, but the data allowance covers everything you’ll actually use. Current deals are on our Saily promo code page.
Tip: Through Gizmodo, you can save 15% on all Saily plans by using the promo code GIZMODO at checkout.
3. Holafly
Pros
- Unlimited data with no speed cap
- Two networks: NOS and Vodafone
- Top-notch 5G speeds
- 24/7 live chat service
Cons
- 500 MB/day data sharing
- The most expensive month at $74.90
Holafly suits a short to moderate stay. A single day of unlimited data costs $3.90, and the effective daily rate falls as you extend: ten days come to $36.90 and a month to $74.90, which is $27 more than Ubigi.
Two things justify the premium. First, the data is genuinely uncapped: no 5 GB daily allowance, no drop to 1 Mbps, unlike Saily. Second, the networks. Holafly runs on NOS and Vodafone, two operators rather than one, with 5G, and we got top-tier speeds for everything, including lag-free VoIP calls. The plan activates itself the moment you arrive.
Its 24/7 support was always there, not that we needed it. The one real flaw is data sharing, capped at 500 MB per day, which rules out a group on a single plan. Otherwise Holafly is deservedly popular, and also one of the best eSIMs for Asia, the USA and Canada.
4. Airalo
Pros
- 5G only, no 4G fallback needed
- Very affordable
- Data usage tracking
Cons
- No Portuguese phone number
- Slow customer support
Airalo runs exclusively on 5G in Portugal, which makes it fast and dependable, and it’s a rare thing: most of its country plans elsewhere are 4G-bound. In our retests it performed like a champ, with no activation or usage issues. The entry 1 GB plan over 3 days is $4, though we used the 10 GB plan at $9 for 7 days.
Unlimited data starts at $10.50 for 3 days and reaches $61 for 30. Either way, Airalo is inexpensive with broad coverage. It’s also known for unlimited data sharing and an app that tracks usage and warns you before you hit the limit.
It isn’t flawless. Support remains the slowest of the five, and there are no Portuguese phone numbers. When we tested eSIMs in the Netherlands we used Airalo’s plan with a number for calls and texts, but Portugal isn’t on that list. Small complaints. As a whole, Airalo is a well-oiled machine.
5. aloSIM
Pros
- The only one with voice calling & SMS
- Instant activation
- Business plans available
Cons
- Not ideal for short stays
- Inconsistent speeds
aloSIM earns its place through its international phone number, usable in Portugal for calls and texts, and included free with every plan, even the cheapest at $4.50 for 1 GB over 7 days. It suits longer stays, since most of its plans run 15 and 30 days.
The best value is 20 GB for $28 over 30 days, and unlimited data costs $35 for 10 days. Performance was decent, with stable 4G and 5G connections for everything we threw at it, though our speed measurements put it behind Holafly and Ubigi.
Support could be faster, but activation is easy and nothing broke, so you probably won’t need it. aloSIM is a solid all-rounder with business plans and tailored pricing. Take it for a longer stay, or if you need a number for verification codes.
Conclusion
These are some of the best eSIM providers overall, and they’re all reliable in Portugal, with flexible plans, good coverage and seamless activation. Ubigi takes the top spot: fast, affordable, uncapped tethering, and the cheapest unlimited month at $48.
Saily has become the cheapest way in at $3.39, and no rival bundles the same security tools. Holafly is the one to buy if you want unlimited data that never slows down, and it’s the only provider on two Portuguese networks. Airalo is a cheap, 5G-only workhorse, and aloSIM is the only option with an international number for calling, texting and authentication.
Frequently Asked Questions
What is the best eSIM for Portugal?
Ubigi is the best eSIM for Portugal overall. Unlimited data costs $24 for 7 days and $48 for 30 days, the cheapest month of the five, with uncapped tethering and encrypted connections. The GIZMODO code takes a further 10% off your first order. Saily is the cheapest way in, at $3.39 for 1 GB over 7 days with the code.
What is the cheapest eSIM for Portugal?
It depends on your trip. For a day or two, Holafly is cheapest at $3.90 for unlimited data. For anything longer, Ubigi wins, with unlimited data at $24 for 7 days and $48 for 30, against Holafly’s $74.90 for the same month. On metered plans, Saily’s 10 GB month at $14.44 with the code is the best value.
Which devices support eSIM cards?
Most phones from 2020 onwards, plus many tablets and laptops. The oldest compatible iPhone is the XR, released in 2018, and on Samsung’s side it’s the Galaxy S20, from 2020. Every provider has a compatibility checker: type in your model and you’ll know immediately. You can also open Settings and look for an option to add an eSIM.
Which eSIM has truly unlimited data in Portugal?
Holafly. Its unlimited plans have no speed cap at any point. Saily’s give you 5 GB per day at full speed and then throttle to 1 Mbps, which is fine for maps and messaging but not for streaming. Ubigi’s unlimited month at $48 is the cheapest of the three.
Can I call and text with an eSIM in Portugal?
Only with aloSIM, which includes a free international phone number on every plan, usable for calls, texts and verification codes. Ubigi, Saily, Holafly and Airalo are all data-only in Portugal, so calls and messages go through WhatsApp or another VoIP app.
Which networks do Portugal eSIMs use?
Portugal has three operators: MEO, NOS and Vodafone. Holafly reaches NOS and Vodafone, two networks rather than one. Airalo runs exclusively on 5G, which is unusual for the brand. Ubigi and Saily both deliver 4G and 5G through local partners.