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On the website they have misleading informations, for the package that I have purchased - 15 Days Unlimited Data Europe, on the same page it says it supports Austria, Hungary, Czech Republic, and also this countries are missing from the list of supported countries with flags.. I contacted support and they explicitly confirmed that it works there.
Once I reached the Hungary, I had no data, because my eSIM could connect only to 2G networks. I reached the support again but they told me that my eSIM is blocked due to misuse. But how can I connect with it to 2G then?! They didn't told me what was the misuse.
I asked for refund but they closed the chat thread, since I got the answer, but no service and for my work more importantly no internet.

It does what it says on the tin. Good for messaging only, even pictures could be hard to transfer.
Websites are throttled down heavily so finding out about timetables can be an issue.
It's only good for those who can plan well ahead (offline maps, saved timetables etc.) and think about it like bridge between two WiFi hotspots.
Piecewise unbeatable though.
There are about 120 eSIM providers and roughly 7, 200 prepaid data plans available in Hungary, offering a wide variety of options so travellers can easily find an eSIM that fits their needs.
Yes, several eSIM providers offer unlimited‑data plans in Hungary. These plans typically feature speed throttling—most limit usage to about 5 Mbps, while a free option is available with a 256 kbps ceiling and ads. The available pricing ranges from a free plan to roughly $30, with most providers offering plans between $2 and $29 per validity period. Travelers can choose a plan that fits their stay length and data needs, keeping in mind that speed may be reduced after a certain data volume.
In Hungary, the primary Mobile Network Operators (MNOs) providing infrastructure for travel eSIMs are:
Magyar Telekom: The largest telecommunications company in Hungary, offering extensive 4G/LTE coverage and advanced 5G services.
Yettel: Formerly known as Telenor, Yettel provides comprehensive 4G/LTE and expanding 5G services across the country.
One: Previously operating as Vodafone Hungary, One delivers widespread 4G/LTE coverage and is actively developing its 5G network.
Additionally, Hungary hosts several Mobile Virtual Network Operators (MVNOs), such as Digi Mobil and Lycamobile. These MVNOs lease network access from the major carriers to offer their own mobile services. However, it's important to note that most travel eSIMs rely on the infrastructure of the primary MNOs rather than MVNOs.
Travel eSIM plans that include a phone number and SMS for Hungary are offered by several independent providers. The numbers are issued with foreign dialing codes – +1 for the United States, +33 for France, and +44 for the United Kingdom – so they are not local Hungarian numbers. All plans provide inbound and outbound voice, but SMS support differs; GlobaleSIM plans allow only inbound SMS, while Roamify, SimOptions, and MoreMins eSIM plans support both inbound and outbound SMS, giving travelers full texting capabilities.
Prices begin around $4.00 USD for a 7‑day, 1GB GlobaleSIM plan and increase to about $70.00 USD for a 30‑day, 200GB Roamify plan that offers unlimited calls and SMS. Validity ranges from 7 days to 365 days, and data caps span from 1GB up to 500GB, enabling users to select a plan that suits their travel duration and data consumption.
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