If you already know you'll be buying data and just need to decide on the amount, this guide is exactly about that: how many GB you need for Ukraine without falling short or paying too much. But I'm warning you from the very first line, because it would be dishonest not to: Ukraine is not a tourist destination. It is a country at war, with martial law and a curfew, and here, connectivity is not a convenience, it is part of your safety. That's why the number I'm going to give you leans more towards redundancy than leisure.
The short answer
For a 10-day trip to Ukraine — for press, humanitarian aid, business, or to visit family — most people will find 6 GB of normal use sufficient, but here I recommend buying 10 GB: not to spend more, but because running out of data could mean missing an air raid alert.
Note that I didn't come up with that number for leisure. For a normal destination, I calculate GB by how much Instagram and Netflix you'll watch. Here, the criteria change: I calculate by how much security and redundancy you want to have. The difference between 5 and 10 GB in Ukraine isn't "watching more videos," it's "having wiggle room if your operator's network goes down one day and you have to rely on data for several consecutive days without being able to calmly recharge."
If you have more questions than this guide answers, in the hub on how much data you need for travel, you'll find the general method. Here, I'm going straight to what makes this destination special and the figures per profile, which is what you came to find.
First of all: Ukraine is a country at war
I can't talk about gigabytes without stating this upfront. The Ministry of Foreign Affairs advises against travel to Ukraine, and if you still go, the official recommendation is to consult their updated travel advisories and register with the Travelers Registry before entering. This is not legal filler: it's the first thing you should do.
In practice, most people entering today do so by land from Poland, because civilian airspace is closed. Martial law is in effect, and there is a nightly curfew (the schedule varies by region and can change from day to day). During that curfew, you cannot be on the street, and alerts and schedules are communicated, of course, via mobile.
What does this have to do with your GB? Everything. It means you will depend on your phone to know which areas to avoid, what time to go indoors, where the nearest shelter is, and whether or not there is an alert in your city. A mobile phone without data in Ukraine is not a "slightly limited" mobile phone: it is half a mobile phone. That's why, when in doubt between two sizes, my advice will always be to go for the larger one.
Air raid alerts arrive via mobile
This is the number one argument for carrying extra data. In Ukraine, air raid alerts are disseminated through official alarm applications (the most used is the state air raid alert app, which sends critical notifications even with the phone on silent). If you run out of data, you won't receive the alert. It's that stark.
Golden rule in Ukraine: prefer to run out of battery for leisure than out of data for alerts. An "extra" GB is cheap; missing an alarm is priceless.
The good news is that these apps consume very little — we're talking about a few MB a day — so consumption isn't the problem. The problem is availability: you need your phone to be connected practically all the time, and that leads to two sensible decisions:
- Buy more GB than you would "spend", so you never ration the connection that alerts you.
- Consider a second data line (a separate chip or profile from your main one), so that if one network fails, you still receive alerts through the other.
Download alert apps and maps before entering the country, using Wi-Fi, and configure them for your region. Don't spend the first day setting things up while a siren is blaring.
Blackouts and downed antennas: have a plan B
Ukraine suffers recurring attacks on its electrical grid, leading to blackouts that, in addition to leaving you without power, also leave cell phone towers out of service when their backup batteries run out. Translated for your trip: there may be times and areas where, simply put, there is no coverage. It's not that you've used up your data; it's that the network isn't there.
That's why the keyword here isn't "gigabytes," it's redundancy. My minimum connectivity kit for Ukraine:
- Large power bank (20,000 mAh or more) and your phone always above 70%. High battery isn't a quirk: it's your margin during an outage.
- Two data lines. Your main line plus a second one (for example, an independent data profile). If you want to understand the technology, here I explain what an eSIM is and why it fits as a second line without changing chips.
- Downloaded maps and documents to work without a network.
Keep one factor in your favor: national roaming works in Ukraine between operators during the war, so if your operator goes down, your phone can connect to another network. And at many coordination points there is widely deployed Starlink, which provides Wi-Fi when the mobile network is unavailable. Don't rely on it, but factor it into your plan.
How much each app actually consumes
Let's get to the numbers, which is what turns "many GB" into a figure. These are real and updated consumptions; save them, because they are the basis of all calculations. As you can see, chatting and using maps consumes very little; what really drives up the counter is video and social media for leisure.
| Activity | Approximate consumption |
|---|---|
| Text and voice messaging (WhatsApp, Telegram, Signal) | 5-15 MB per day |
| Google Maps navigating | 3-5 MB/hour (7-10 with live traffic) |
| Air raid alert app | < 5 MB per day |
| Uploading photos (per 20 images) | 40-100 MB |
| Social media (normal scrolling) | 100-150 MB/hour |
| Streaming music | 60-150 MB/hour |
| Video call (WhatsApp, Zoom, Teams) | 300-500 MB/hour |
| SD video 480p (YouTube, Netflix) | ~540 MB/hour |
| Reels, TikTok, and vertical video | 900 MB - 1.2 GB/hour |
| HD video 720p or higher | 1 GB or more/hour |
The honest reading is this: if in Ukraine you limit yourself to messages, maps, alerts, and some video calls, you'll spend very little, and 5 GB will be more than enough. What inflates the bill is video and social media for leisure. If you want the detailed breakdown by app, I explain it in the data usage statistics by activity.
EU roaming already covers Ukraine from 2026
Important new development, highly relevant for your wallet: from January 1, 2026, Ukraine is included in EU roaming under the "Roam Like at Home" principle. In plain English: if you have a Spanish tariff plan, in Ukraine you will use data, calls, and SMS under the conditions of your home tariff, without roaming surcharges. Ukraine was the first country outside the bloc to join.
This is all very good, but it has fine print that you should know to avoid an unpleasant surprise:
- Fair volume use. "No surcharge" does not mean "unlimited." Your operator applies a data cap in roaming based on the price of your plan; once that limit is exceeded, a small extra charge per GB applies. With modest plans, that cap falls short for a long trip.
- Permanent use. Roaming is for travel; if you stay for months, the operator may charge you for it.
Practical conclusion? For short stays and low consumption, your Spanish roaming might be enough. For long stays, extensive work, or if you want a second independent data line from your main line, a dedicated local eSIM provides more leeway and isolates the cost. The full comparison —roaming vs. SIM vs. eSIM— can be found in the Internet in Ukraine guide; here we continue with gigabytes.
How many GB according to your profile and days
This is the table you came to see. I've adapted the profiles to who is really traveling to Ukraine today, not the beach tourist. The figures already include a safety margin: this is data to buy, not to use just enough. If you're debating between two rows, go with the higher one.
| Profile | 5 days | 10 days | 15 days | 30 days |
|---|---|---|---|---|
| Press / Reporter (maps, uploading material, video calls to media) | 8 GB | 15 GB | 22 GB | 40 GB |
| Volunteering / Humanitarian Aid (coordination, logistics, WhatsApp) | 6 GB | 10 GB | 15 GB | 30 GB |
| Business trip (email, video calls, documents) | 6 GB | 12 GB | 18 GB | 35 GB |
| Diaspora visiting family (WhatsApp, photos, some social media) | 4 GB | 8 GB | 12 GB | 25 GB |
The press profile consumes the most, and with good reason: they upload heavy photos and video, do live broadcasts, and long video calls with the newsroom. The diaspora profile is the lightest, because it usually involves just talking to family and sharing photos. None of these figures are for showing off data usage: they all include a margin for days when the network is unstable and you have to rely on your own connection more than expected. If your actual usage is very low (only messages and maps), go down one step; if you're going to work with video, go up one.
The safety net: untouchable data
I want you to see why I buy "extra" in Ukraine. It's not marketing: there's a consumption I consider untouchable, the kind that keeps you informed and reachable no matter what. Mentally set aside these GB and don't count them as available for leisure.
| "Untouchable" use | Consumption | Why it's untouchable |
|---|---|---|
| Air raid alert app always active | < 5 MB/day | No data, no alert |
| Offline maps downloaded via Wi-Fi | 0 MB in use | Work even if the network goes down |
| Daily contact with home (text and voice) | 5-15 MB/day | Let them know you're okay |
| VPN, if used | +10-20% of your consumption | Encrypts connection, uses a bit more |
| Occasional emergency video calls | 300-500 MB each | Reserve 1-2 GB for this |
In total: the "safety" cushion itself is light (little more than 1-2 GB in a week), but its value is not in the volume, but in the fact that it can never be missing. That's why my logic is: first, I guarantee this data with ample margin, and only then do I decide how much leisure I allow myself on top. If you're going to use a dedicated eSIM for this, look at the specific plans for the country in the eSIM for Ukraine section and size it with this cushion in mind, not the minimum.
How to calculate your own consumption before leaving
The tables give you a starting point, but the most reliable data is your own. And you already have it in your pocket, for free. Before traveling, check how much data you used last month and extrapolate. It's the most honest method there is, because it uses your actual behavior, not an invented average.
- On Android: Settings > Network & internet > SIM / Mobile data usage. You'll see the monthly total and a breakdown by app.
- On iPhone: Settings > Mobile Data, and scroll down to see usage by app (it's a good idea to reset statistics at the beginning of the month for a clean cycle).
Take your monthly consumption, divide it by 30, and you have your average daily spending. Multiply it by the number of travel days, and you have a baseline. Now, two adjustments specific to Ukraine: subtract the video and leisure social media that you probably won't watch there, but add a 30-40% margin for redundancy and for days when you'll only rely on mobile data because there's no reliable Wi-Fi.
An important point: at home you spend a lot via Wi-Fi without realizing it. In Ukraine, don't take that Wi-Fi for granted. What used to be "free" through your accommodation's network might end up coming out of your mobile data, so don't rely solely on the raw number from last month.
How to stretch data without disconnecting
Stretching data here has a special rule: save on leisure, never on safety. You can cut down on video and social media all you want, but never deactivate what keeps you informed. With that premise, these are the adjustments that will save you the most gigabytes:
- Offline maps of the cities and routes you'll use, downloaded with Wi-Fi. You save data and, moreover, they work without coverage.
- Backups and updates only via Wi-Fi. Don't let photos and apps upload using mobile data in the background.
- Lower video quality to 480p and disable auto-play on social media. This is where the counter really runs up.
- Data saver mode activated, but with alert and messaging apps excluded from background restrictions.
Beware of overzealousness: don't force your phone to "mobile data off" to save, because then you won't receive alerts either. The goal is not to spend zero, it's to spend little on what's dispensable to have ample margin on what's essential. If you want the complete repertoire of tricks, you'll find it in my guide on how to save data on trips; apply all of them except those that would leave you incommunicado.
What happens if you run out
Here comes my most "anti-sales" advice, and I stand by it: it's better to run short and recharge than to overbuy. If you buy a huge package "just in case" and don't use it, you're throwing money away. If you buy just enough and run short, you recharge in two minutes from your phone, and you're good to go. Recharging is always a tap away; extra money doesn't come back.
With a nuance that is specific to Ukraine and which I will not tire of repeating: running short cannot mean running out. In a country at war, running out of data just when you need to see an alert or make a call is a real risk, not just an inconvenience. That's why the good strategy isn't "I'll buy the minimum," but "I'll buy with a clear cushion and, when it drops below 20%, I'll recharge immediately, without waiting to use the last drop."
My rule for Ukraine: recharge when you have 20% left, not when you reach 0%. That margin is your insurance to always be reachable and notified.
In summary: a package sized with criteria, early recharging, and never cutting it too close. This way, you don't overpay and, at the same time, you don't risk the one thing that cannot be improvised here: being connected.
Frequently asked questions
How many GB do I need for 10 days in Ukraine?
10 GB will be more than enough for 10 days if your usage is messaging, maps, alerts, and some video calls. Only if you are press and work with heavy video should you go up to 15 GB. The figure already includes a safety cushion.
Does my Spanish tariff's roaming work in Ukraine?
Yes, from January 1, 2026. Ukraine joined the EU's "Roam Like at Home" scheme, so you use data under your tariff's conditions without surcharges. However, there's a volume cap (fair use): once exceeded, you pay extra per GB. It falls short for high consumption or long stays.
Could I lose coverage due to power outages?
Yes, it's a real scenario. Attacks on the electricity grid leave antennas without service when their batteries run out. National roaming between operators and widespread Starlink help, but that's why I insist on a power bank and a second data option.
Do air alert apps consume a lot of data?
No, almost nothing: less than 5 MB per day. They are very light, precisely because they are designed to always work. The "cost" isn't data, it's availability: you need to be connected all the time to receive the alert.
Do I need a VPN in Ukraine?
It might be advisable to encrypt your connection, especially with public Wi-Fi or if you handle sensitive information (press, NGOs). Keep in mind that a VPN adds 10-20% to your consumption, so factor that in when calculating your GBs.
Is an eSIM or roaming better for going to Ukraine?
It depends on your stay and consumption. For short trips and low usage, your Spanish roaming is sufficient. For long stays, a lot of work, or having a second independent data line for security, a dedicated eSIM offers more leeway and isolates costs. Both can coexist on the same mobile phone.
Can I share my data with other people?
Yes, by activating the hotspot. This is very useful for press teams or volunteers. But remember that sharing dramatically increases consumption: if several of you are going to use the same line, upgrade your package by one or two tiers compared to the per-profile table.
Conclusion
If you take away one idea, let it be this: in Ukraine, the amount of gigabytes is not dictated by leisure, but by security. For most, 10 GB for 10 days is the comfortable figure; press working with video goes up to 15-22 GB, and the diaspora only talking to family can go down to 8. On top of any of those numbers, always leave a buffer for alerts, maps, and contacting home, and recharge as soon as you drop below 20%. And first and foremost: consult the Ministry of Foreign Affairs' recommendations and register with the Travelers' Registry. Once you're clear on that, size your eSIM for Ukraine with plenty of data and go in with your connection sorted, as that's the only thing you shouldn't improvise here.
