The two real options for a foreign visitor

When you arrive in Denmark and want a local data connection, you have two practical choices beyond expensive home roaming. You can buy a physical Danish SIM card from an operator store, a supermarket or a kiosk, or you can install a travel eSIM that you bought online before you left. Both put you on a Danish network at local data prices, which is the whole point. The difference is in how you get there, what it costs in time and money, and how much flexibility you keep. For most travellers the eSIM wins comfortably, but there are genuine situations where a local SIM still makes sense, and this satellite lays out both honestly so you can decide rather than just taking my word for it. Denmark's high cost of living makes the convenience of arriving already connected particularly welcome, since your time here is expensive to waste hunting for a phone shop.

Price: closer than you might think

Danish prepaid SIMs are reasonably priced by local standards, and the headline price of a tourist SIM with a generous data allowance can look attractive. But the real comparison has to include your time and the friction of getting one. A travel eSIM for Denmark starts from around $4 for a small bundle and scales up cheaply, and you can buy it from your sofa before you fly. A local SIM requires finding a store, supermarket or kiosk that sells them and queuing, and while Danish SIM registration rules are lighter than in some countries, you still spend time and effort on the errand. By the time you factor in getting to a store in an expensive city and the time spent, any small price advantage of the local SIM often evaporates, especially on a short trip. On a longer stay where you want a large monthly allowance and a Danish number, a local prepaid plan can edge ahead on raw cost per gigabyte, but for a typical visit the gap is small and the eSIM's convenience easily outweighs it.

Convenience: where the eSIM pulls clearly ahead

This is the eSIM's strongest card. You buy it online, install it before you leave home, and arrive in Denmark already connected the moment you land, with no store visit, no queue and no paperwork at a kiosk. There is no tiny plastic card to swap and risk losing, and your phone keeps your home SIM active alongside the eSIM, so your usual number still receives calls and verification texts. For a traveller arriving at Copenhagen airport keen to hop straight onto the efficient metro into the city, walking off the plane already online is a genuine relief. A local SIM, by contrast, means dealing with a shop, swapping cards, and either losing access to your home number or carrying a loose SIM around for the trip. In a country as digitally streamlined as Denmark, where you will want your phone for transport apps and contactless payment from the first minute, the eSIM's instant readiness fits the destination perfectly.

Coverage and the dual SIM trick

On coverage the two are essentially tied, because a reputable travel eSIM rides on the same Danish networks a local SIM would use, and Danish coverage is excellent across all of them. The one nuance is network selection: a local SIM lets you pick exactly which operator you join, but in Denmark this matters far less than in most countries because every network has near total coverage, so the advantage is largely theoretical for a normal trip. The real advantage of the eSIM is dual SIM operation. Because your phone runs the eSIM for data and keeps your home SIM for your number, you get the best of both: cheap Danish data plus your normal number for the bank text or the verification code. With a local physical SIM you usually have to choose one or the other unless your phone has two physical slots, which most modern phones do not. In Denmark, where so many services rely on receiving a confirmation code, keeping your home number live through dual SIM is especially handy.

When a local SIM still wins, and the verdict

A local Danish SIM genuinely makes sense in a few cases. If you are staying for many months and want a local number for Danish services, banking or a long term plan, a local SIM or a proper Danish mobile subscription is the better fit. If you need very large monthly data at the lowest possible cost and do not mind the setup, a local prepaid plan can be cheaper per gigabyte. And if your phone does not support eSIM, which applies to some older or budget models, the physical SIM is your only local option. For everyone else, which is the overwhelming majority of visitors on trips from a few days to a few weeks, the eSIM wins on convenience, keeps your home number live, costs little, and gets you connected before you even reach baggage claim. That is my verdict for a normal Danish trip: buy the eSIM, skip the shop, and spend your expensive Copenhagen time on the city rather than on an errand. The local SIM stays a niche choice for long stays and specific needs.

The decision in one paragraph, plus the edge cases

To distil the whole comparison, here is the decision in plain terms. For the overwhelming majority of visitors, a few days to a few weeks, the eSIM is simply the better buy: you install it at home, arrive in Denmark already online, keep your home number alive for codes through dual SIM, skip the shop entirely, and pay a low fixed price starting from around $4. In an expensive country where your time is costly to waste and where you will want your phone working from the first minute for transport and payment, that instant readiness is especially valuable. The local SIM only pulls ahead in a handful of specific situations, and it is worth being clear about them so you can recognise yourself. If you are staying many months and want a Danish number for local services or a long term contract, a local SIM or proper subscription fits better. If you need very large monthly data at the absolute lowest cost per gigabyte and do not mind the setup, a local prepaid plan can win on raw price. And if your phone simply does not support eSIM, the physical SIM is your only local route, so check your device first. For everyone else, the convenience, the preserved home number, the low cost and the instant connection on landing make the eSIM the clear choice for a Danish trip. My honest recommendation, after weighing both sides, is to buy the eSIM unless one of those specific edge cases describes you, and to spend your expensive Copenhagen hours on the city rather than in a phone shop. The technology has matured to the point where, in a country this digital and this pricey, arriving already connected is not a marginal convenience but the obviously sensible way to travel.

What the experience actually feels like on the ground

Beyond the feature by feature comparison, it is worth describing what each option actually feels like in practice during a Danish trip, because the lived experience is where the eSIM advantage really lands, especially in an expensive, fast moving country. With the eSIM, your arrival looks like this: you land at Copenhagen airport, your phone connects to a Danish network within a minute of you switching off airplane mode, and you immediately tap your phone to buy a metro ticket and navigate into the city, because you set it all up at home days earlier. There is no detour to a shop, no queue, no fiddling with a tiny card over an airport bin, and no risk of losing your home SIM in the process. Your home number keeps working for the verification text your bank sends, which in heavily digital Denmark you will need sooner than you expect, and everything just flows. With a local SIM, the same arrival involves finding a shop or kiosk that sells them, queuing, choosing a tariff, swapping your SIM and stowing your home one somewhere safe, and only then getting connected, by which point you may have already needed your phone for the metro and maps. In a country where time is expensive and daily life is thoroughly app based, that contrast, already connected and tapping onto the metro versus hunting for a shop while jet lagged, captures why the eSIM has become the default. Over a longer stay the local SIM's cost advantage can grow and its downsides fade, which is why it remains right for some, but for a normal Danish trip the eSIM's instant readiness fits the destination so naturally that it is hard to recommend anything else, and the few minutes you save at the airport are worth more in expensive Copenhagen than almost anywhere.