Most people either buy far too much data for a week in Spain or run out on day five. Here is what a week actually consumes.
Spain is the most common trip out of the UK by a wide margin, and it is also the one people most often get wrong when it comes to data. The two failure modes are opposite: buying a large bundle out of anxiety and using a third of it, or buying the smallest one and rationing photos by Thursday.
The honest answer for a typical week is smaller than most people assume, and it depends far more on how you travel than where you go.
The short answer
For a week of ordinary holiday use — maps to find dinner, photographs, messaging, a bit of scrolling in the evening, hotel or apartment Wi-Fi at night — most people land somewhere between three and eight gigabytes.
That range is wide because two habits move it more than anything else: whether you stream video on mobile data, and whether you have Wi-Fi where you sleep. Change those two and the number moves more than the destination ever does.
Where the data actually goes
It helps to know the rough shape of what different things consume, because the intuition most people have is wrong in both directions.
Maps and navigation use much less than people fear — it is mostly small map tiles, and you can download an area before you go.
Photographs use nothing to take and a great deal to back up. Automatic cloud backup over mobile data is the single most common reason a plan empties early.
Messaging and voice notes are trivial. Video calls are not.
Scrolling social feeds is the quiet one. Video autoplay turns a light habit into a heavy one without you noticing.
Streaming video or music is the largest by a distance. An evening of video on mobile data can use more than the rest of the day put together.
THE ONE SETTING WORTH CHANGING BEFORE YOU FLY
Turn off automatic photo backup over mobile data, and let it run when you are on Wi-Fi. On a week where you take a few hundred photographs, this one change is often the difference between comfortably inside your plan and running out on day five.
A city week and a coastal week are not the same
A week in Barcelona or Madrid tends to use more, because you are navigating constantly, looking things up, moving between places, and using your phone as the thing that decides what happens next. A week somewhere coastal, where you walk to the same beach and the same three restaurants, uses noticeably less.
Working from Spain is different again, and if that is your trip the relevant question is months rather than days.
What that means for choosing a plan
For most week-long trips, a mid-sized plan over a month-long window is the sensible choice. The window matters as much as the size: a plan whose validity comfortably exceeds your trip means a delayed flight or an extra night does not become a problem.
Our Spain plans start at $8.49 and run from 10GB upward. The plan page shows the current sizes and prices, and the honest recommendation for a standard week is the middle of the ladder rather than either end.
Setting it up before you go
Set the eSIM up at home, on your own Wi-Fi, before you travel. It sits on the phone dormant and connects to a local network when you arrive. Doing it at the airport is possible but it means relying on airport Wi-Fi at the exact moment you would rather not.
Your usual number stays on the phone throughout, so calls and texts to it behave as they normally would.
