eSIM for Hungary — Budapest and the Thermal Spas

In short: an eSIM for Hungary gives you mobile data as soon as you land in Budapest, without expensive roaming and without having to swap a physical card. For a week between the city and Lake Balaton, 5-7 GB will be more than enough; if you are traveling from another EU country, check if your European data roaming already covers Hungary before overpaying. See plans →

Traveling to Hungary is an incredible experience, but arriving without data can ruin the first few moments: no Google Maps to get out of the airport, no way to find your hotel, no way to contact whoever is waiting for you. The solution is simple and has been the standard among experienced travelers for years: an eSIM for Hungary.

In this guide, we'll tell you everything you need to know before traveling to Hungary: what coverage you can expect in Budapest and Lake Balaton, how many GB you really need, how to activate your eSIM, and the best connectivity tips from those who have already traveled there.

Spoiler: with PuraSim, you have local data from the moment your plane lands, with no contracts, no physical SIM, and no surprises on your bill.

Why do you need an eSIM for Hungary?

International roaming from European and Latin American operators can cost you between 10 and 30 euros or dollars per day in Hungary. A local eSIM gives you data at local prices, with no absurd daily limits and with 4G or 5G speeds where the network allows.

The difference between using roaming and a PuraSim eSIM is huge:

• Traditional roaming: fixed daily rate even if you barely use data, speed often limited to 3G, surprise bills when you return.
• PuraSim eSIM for Hungary: you only pay for what you contract, full local data at the maximum available speed, activation in 5 minutes from anywhere.

In addition, with an eSIM, you can keep your original phone number active to receive calls and SMS, as the eSIM operates in a separate virtual slot. You don't have to choose between local connectivity and your usual number.

In Hungary, where Budapest's thermal baths require you to leave your mobile phone in a locker and the BKK app handles all public transport in the capital, having stable data from the first minute makes the difference between losing half a morning or getting straight to the hotel. Coverage in Budapest and Lake Balaton is generally good, but there are areas where you would be in the dark without a well-configured local eSIM.

An important nuance that almost no one mentions: Hungary has been a member of the European Union since 2004, so if you are traveling with an operator from another EU country, the roaming like at home regulation may already be included in your usual plan. For short stays with a generous European plan, you may not need to buy anything extra. The problem arises with adjusted data plans or with prepaid tariffs that limit EU roaming to a few GB: that's when a local eSIM that doesn't depend on that limit pays off. And if you come from outside the EU (Latin America, United Kingdom, United States), that free coverage simply doesn't exist for you.

Data coverage in Hungary: what you can expect

Coverage in Hungary varies greatly depending on the area. In the main urban and tourist areas (Budapest and Lake Balaton) you will find 4G and in some cases 5G networks. The experience is comparable to what you would have at home.

However, as in any destination, there are areas where the signal is more limited:

• Major cities: stable 4G/5G, perfect for streaming, browsing, and video calls.
• Rural and natural areas: coverage may drop to 3G or even lose signal in remote areas.
• Transport: trains, ferries, and intercity buses have variable coverage; in cities generally good.

Key tip: on the M1, Continental Europe's oldest metro line, which connects the city center with Andrássy út, the signal is patchy underground. Don't count on data there: download your route or map before going down the stairs.

To maximize coverage in Hungary, PuraSim uses the local networks with the best available infrastructure through local roaming agreements. This means your eSIM automatically connects to the network with the best signal at all times.

How many GB do you need for a trip to Hungary?

This is the million-dollar question. The short answer: 5-7 GB for 1 week. The long answer depends on how you use your phone during the trip.

Here's a guide to real daily consumption by type of use:

• Basic use (maps, messages, occasional queries): 300-500 MB/day
• Moderate use (social media, photos, continuous browsing): 800 MB-1.5 GB/day
• Intensive use (remote work, streaming, video calls): 2-4 GB/day

For a 1-week trip to Hungary, we recommend contracting 5-7 GB for 1 week. This is enough for most travelers with normal use: Google Maps running constantly, Instagram, WhatsApp, and some occasional searches.

If you're going to work remotely or plan to make frequent video calls, upgrade to the next plan immediately. PuraSim plans allow you to top up your data if you run out, so it's not a problem if you fall short: you won't suddenly lose coverage.

PuraSim offers specific plans for Hungary with different data and duration options. See the complete collection in our plans for Hungary.

How to activate your eSIM for Hungary step by step

Activating a PuraSim eSIM is as simple as scanning a QR code. There's no need to go to a store, no need to wait for any delivery. The entire process takes less than 5 minutes:

1. Buy your plan on purasim.com for Hungary. You will receive an email with the QR code.
2. Install the eSIM: go to Settings → Mobile Data → Add Data Plan (on iPhone) or Settings → Connections → SIM Manager (on Android).
3. Scan the QR code or manually enter the activation data.
4. Configure mobile data: make sure to select the PuraSim eSIM as the default data line.
5. Activate data roaming in the PuraSim eSIM settings (necessary for it to work on local networks).

You can install the eSIM before leaving home and set it to activate automatically when you arrive in Hungary, or activate it manually when you land. If this is your first time using one, check out our general guide on how to install an eSIM step by step with screenshots for iPhone and Android.

Important: verify that your phone is eSIM compatible before purchasing. Most iPhones from XS onwards, Samsung Galaxy from S20 onwards, and Google Pixel from 3 onwards are compatible. Check the complete list on purasim.com.

Local connectivity tips for Hungary

Beyond getting the right eSIM, there are a few tricks that make a difference in staying connected throughout your trip to Hungary:

• Download offline maps before you leave. Google Maps and Maps.me allow you to download maps of all of Hungary or specific cities. This way, you can navigate without using data when you're in areas with a weak signal.
• Use airplane mode strategically. On long flights, trains, or ferries, activating airplane mode saves battery and data. Connect to available Wi-Fi if there is any.
• WhatsApp and Telegram over data. Calls through these apps consume much less than an international call. Configure them for high-quality calls only when you're on Wi-Fi.
• Share your connection carefully. Hotspots consume data quickly, especially if other devices are connected (laptop, tablet). Use it only when necessary. If you want to share your connection and stretch your GBs to the maximum, we have a guide with tips to save data while traveling that work just as well in Budapest as anywhere else.

And the tip that almost no one tells you before you leave: install the eSIM profile with Wi-Fi at home, not at Budapest airport immediately after landing. You need an internet connection to download the profile the first time, so do it calmly a few days before checking your luggage and have it ready to activate as soon as you set foot on Hungarian soil.

With these tricks and a good PuraSim data plan, your trip to Hungary will have the connectivity you need without unnecessary expenses.

What almost no one tells you before traveling to Hungary

There are a number of details that are not included in typical travel guides and that make quite a difference once you are there:

• The forint still rules. Hungary is in the EU but does not use the euro: the currency is the Hungarian forint (HUF). Contactless card payment is widespread in Budapest, so you don't need data to pay, but in small markets, some neighborhood thermal baths or rural areas, it's still advisable to carry some cash.
• Not all phones have dual active SIMs at the same time. Some models allow both a physical SIM and an eSIM to be installed, but only one with active data simultaneously on networks that are not 5G. If you notice that data "cuts out" when you receive a call on the other line, it's not an eSIM fault: check in settings which line you have marked as mobile data.
• Wi-Fi in old accommodations fails more than you think. Many buildings in the center of Pest are pre-war constructions with thick walls that cut off the Wi-Fi signal between floors. It's not uncommon for hostel Wi-Fi to be weak on the fourth floor: having your own data avoids relying on that for basic needs.
• Free public Wi-Fi has a catch. In cafes, Keleti station, or Budapest airport, connecting to open, unprotected networks is not the most advisable if you're going to check your bank or email. If you have to use public Wi-Fi, do it wisely; here's more detail on how to protect your privacy when connecting away from home.
• When NOT to buy an eSIM. If you're going to spend an entire weekend only at the hotel and at conferences with guaranteed Wi-Fi, or if your European operator already gives you extensive roaming with no practical limit, save yourself the expense. An eSIM makes sense when you're moving around, browsing, and need reliable data outside a fixed network; not when you already have connectivity covered elsewhere.

Frequently asked questions

Written by Marc González Sáez Founder of PuraSim and a specialist in eSIM and connectivity for travelers. He has been helping people travel connected worldwide for years without overpaying for roaming, and personally tests eSIMs in each destination before recommending them.