Holafly Review 2026: Disadvantages, Reliability, and How to Fix eSIM Issues (Honest Take)

We have installed Holafly eSIMs on five devices, in 19 countries as of August 2026, for nearly four years of full-time family travel. Japan for over 300 days. Vietnam for over 300 days. A winter loop through seven European countries on one regional eSIM. A week in Shanghai testing whether the built-in VPN actually works behind the Great Firewall. It does, and we will get to that.

This is the review we wish someone had written for us before the afternoon our data cut out mid-navigation in rural Kyoto with three hungry children in the backseat. Holafly is our pick for most travelers, but it has real limitations, and this page covers all of them, plus the fixes for when an eSIM refuses to connect at the worst possible moment.

What is Holafly and how does it work?

Holafly is an eSIM provider founded in Spain in 2017, now headquartered in Dublin. An eSIM is a digital SIM embedded in your phone. You buy a plan, scan a QR code, and you are on a local network minutes after landing, without swapping physical SIM cards or paying roaming fees.

What separates Holafly from providers like Airalo and Saily is unlimited data. Competitors sell capped packages of 1GB, 5GB, or 20GB. Holafly sells a flat daily rate with no cap, subject to fair use. For a family of five burning through Google Maps, translation apps, FaceTime calls to grandparents, and the occasional Bluey episode on a long train, that difference decides the purchase.

What are the disadvantages of Holafly?

We have installed dozens of these. Here is everything that has annoyed us.

Destination eSIMs are data-only, with no calls or SMS

Holafly destination eSIMs and the Light Plan do not support traditional phone calls or SMS. You communicate over data: WhatsApp, FaceTime, Zoom, Messenger. For us this is rarely a problem, but it bites in specific situations. Some hotel check-ins want a phone call. Two-factor codes sent by SMS will not arrive on a data-only eSIM. The Unlimited Plan, bought from November 2025 onward, adds a dedicated US, UK, or Canada number that receives SMS only, which covers verification codes but still cannot make calls or send texts. On the data-only products our workaround is dual SIM: we keep our home carrier alive on a cheap plan for verification texts, and Holafly carries everything else. Every modern iPhone and most Androids handle this in settings without drama.

Hotspot allowance varies by destination

You get unlimited data on the device itself, but the hotspot allowance varies by destination. Through our months based in Da Nang, we planned around this daily: phones handled the heavy tasks directly, and the hotspot allowance was rationed for the girls' iPads during worldschooling lessons. It works, but it takes coordination, and a family running three tablets off one phone will feel the ceiling by lunchtime.

The monthly Plans subscription removes this problem with unlimited hotspot, which is the main reason it is what we actually run now.

Fair use throttling is real

Unlimited carries an asterisk. Local partner networks enforce fair use, and heavy single-day consumption can slow your speeds. We have hit it a handful of times, always on days when we were uploading YouTube footage while the kids streamed. Harper once discovered Netflix downloads on a bullet train and the whole family paid the price by dinner. For normal use, maps, messaging, social media, browsing, and moderate streaming, we rarely notice throttling at all.

It costs more than capped competitors

Holafly is not the cheap option. Here is the honest math for a 7-day Japan trip:

If 1GB covers your week, buy the cheaper product. The gap closes fast once you need 5GB or more, and disappears entirely if running out of data mid-trip would ruin your day. We pay the premium for never thinking about it.

Regional plans have coverage gaps at borders

Regional eSIMs cover most of a region, not all of it. We took Holafly through seven countries last winter: Denmark and Sweden in November 2025, then Czechia, Poland, Lithuania, Latvia, and up to Rovaniemi in Finnish Lapland in January 2026. Coverage inside each country was solid, including on regional trains through rural Poland. The one wobble was the rail crossing from Poland into Lithuania on December 18, where service briefly dropped around the border stop at Pagrudai before picking back up. Check the country list on any regional plan against your actual route before buying, especially if your itinerary touches the edges of the map.

The app has quirks

The My eSIMs page sometimes lags on activation status, so you cannot always trust the remaining-days display. It has also switched itself to Spanish on us more than once, which tracks with the company's origins but is unhelpful at midnight in a country where you are troubleshooting. None of this matters much in practice; everything the app does can be done on the website and in your phone's own settings.

Is Holafly reliable?

Yes, with the caveat that your connection is only ever as good as the local partner network. Here is what that has looked like for us, by place and date.

Japan

Holafly rides on NTT Docomo. Across our 300+ days, including a three-month Osaka base for cherry blossom season in spring 2026, coverage held everywhere we went: the Osaka subway, the Shinkansen at full speed, small towns in between. Docomo is the network we would choose if we lived there, and Holafly puts you on it.

Vietnam

Our current base. Coverage in Da Nang is strong enough that we run video calls from beach cafes without thinking about it. Rural stretches between cities get patchy, exactly as they do for locals on the same networks.

Europe in winter

The seven-country loop, November 2025 through January 2026. One eSIM, one setup, no swaps at any border, and the only drop was the Pagrudai crossing mentioned above. December 18 alone involved a Warsaw tram transfer, an intercity train, and a border crossing, all navigated from a phone.

China

We spent a week in Shanghai in September 2025 specifically to test the China eSIM, which includes a built-in VPN. Google, WhatsApp, and Instagram all worked without a separate VPN app, while the standalone VPN we brought as a backup struggled. The 7-day plan cost us $27.30. That trip has its own full write-up in our China eSIM review.

Support

The 24/7 chat has answered us within minutes from every time zone we have tried it in. Simple questions get resolved in one exchange. Activation problems take more back-and-forth but have always been resolved.

When things go wrong

No provider hits 100%. We have had activations that needed a second attempt and days where coverage was inconsistent. The Kyoto cutout in the opening of this review was the worst of it in four years. Every failure we have had was fixed by the steps below or a support chat. The negative reviews you will find online cluster around three things: local network problems in specific destinations, surprise at the data-only limitation, and fair use throttling. All real, all covered above.

How to fix a travel eSIM that won't connect

Why is my eSIM service so bad? (Slow speeds, dropped connections)

If you are connected but crawling, it is almost always one of four things. Congestion: in a packed city center at peak hours every network slows, and moving a few blocks or waiting an hour fixes it. Fair use throttling: covered above; back off the streaming and it resets. Wrong network band: toggle airplane mode, or manually select the partner carrier in your network settings. Local infrastructure: in rural areas the eSIM can only deliver what the local network has.

Whatever the cause, download offline maps and translation packs before you leave the city. This habit has saved us repeatedly in rural Vietnam, and it costs nothing but a few minutes on hotel WiFi.

Holafly pricing: what does it actually cost in 2026?

Holafly's pricing is a flat rate for unlimited data based on the number of days you need. Longer plans have lower per-day rates. A snapshot of popular destinations:

When monthly Plans make more sense

Past 30 days of travel, or across multiple countries, the monthly Plans subscription wins on price and removes the hotspot cap. One eSIM covers 160+ destinations, and the Always On feature keeps 1GB per month alive in 150+ destinations even if you pause the subscription, so you never land anywhere completely dark.

The Unlimited Plan works out to roughly $2.16 per day with unlimited hotspot. That is what runs our family of five today, and what we wish had existed in 2022 when we were juggling a separate eSIM for every border.

How to get the most out of your Holafly eSIM

Install before you fly. Set the eSIM up at home on WiFi, confirm it appears in cellular settings, and only enable data roaming after landing. This turns arrival into a 30-second task instead of an airport troubleshooting session with jet-lagged kids.

Screenshot the QR code. It arrives by email and is single-use. Having the screenshot saved locally prevents the immigration-line email search.

Download offline maps anyway. Underground metro stations and rural gaps do not care how unlimited your plan is. We do this for every new country without exception.

Keep your home SIM active. Dual SIM with your home number for verification codes and Holafly for data is the right configuration for almost everyone.

Restrict the kids' devices. Unlimited data plus unsupervised children equals fair use throttling for everyone. Screen time limits on the iPads protect the whole family's speeds. We learned this on a bullet train.

Buy a buffer day. Flights delay and plans change. One extra day on the plan costs a few dollars and has covered us more than once.

Our verdict: is Holafly worth it in 2026?

After nearly four years and every major provider tested, Holafly is still what we put on our own phones. The data-only limitation on destination eSIMs is a configuration detail, not a dealbreaker. The hotspot cap on destination plans is the one disadvantage that genuinely constrains a family, and the monthly Plans subscription exists precisely to remove it. The fair use policy only bites if you treat cellular data like home broadband.

What you are buying is the absence of a problem. Nobody hunts for a SIM shop on arrival, nobody watches a data meter, and the bill is the same number every time. For a one-week vacation the destination eSIM costs less than lunch for five. For a life like ours, the monthly Plan is infrastructure.