Denmark eSIM: Stay Connected in Copenhagen and Beyond
Skip pricey roaming and get online the second you land in Denmark. Here is how an eSIM keeps you connected across Copenhagen, Aarhus and beyond.
Touching down in Denmark with a dead phone and no Wi-Fi is no fun. A travel eSIM fixes that instantly, so you can pull up directions to your hotel, tap into mobile payments and share that harbour photo before you even leave the airport.
Why use an eSIM in Denmark
Denmark is one of the most cashless, app-driven countries on earth, so being online is essential rather than optional. An eSIM is a digital SIM that installs in minutes with a QR code.
Denmark has excellent, dense coverage. The main networks are TDC/Nuuday, Telia, Telenor and Three, all running fast 4G/LTE with broad 5G in cities and many towns.
Copenhagen: full 5G across the city and metro
Aarhus: strong 5G and reliable 4G
Odense: solid coverage downtown and in the suburbs
Rural areas, small islands and ferry routes lean on 4G, which is still quick for maps and streaming.
How to get connected
1. Buy a Denmark eSIM and choose a data plan that fits your trip.
2. Install it by scanning the QR code we email you within minutes.
3. Activate by enabling data roaming for the eSIM line when you arrive.
How much data do you need
Light (maps, chat, email): 1-3 GB
Medium (social, browsing, some video): 5-10 GB
Heavy (streaming, hotspot, remote work): 15-20 GB or unlimited
A week of typical sightseeing usually fits in 5-7 GB.
Good to know
Currency: Danish krone (DKK); cards and phones accepted nearly everywhere
Capital: Copenhagen
Language: Danish (English is widely spoken)
Time zone: Central European Time (CET/CEST)
Famous places: Nyhavn harbour, Tivoli Gardens, and the Little Mermaid statue
FAQ
Is my phone compatible?
Most phones from the last few years support eSIM, including recent iPhone, Samsung Galaxy, and Google Pixel models. Check your settings for an Add eSIM option.
When should I install it?
Install at home before you travel. The plan only starts counting when you connect to a Danish network on arrival.
Can I keep WhatsApp on my number?
Yes. WhatsApp is tied to your phone number, not the eSIM, so it keeps working normally while you use eSIM data.
Yes. Denmark has excellent nationwide mobile coverage and full eSIM support, so a HelloSIM eSIM connects to local networks automatically once installed and activated.
Is my phone compatible with a HelloSIM eSIM for Denmark?
Most phones from the last few years support eSIM, including iPhone XS and newer, Google Pixel 3 and newer, and recent Samsung Galaxy S, Note, and Z models. Your phone must also be carrier-unlocked.
How do I check if my phone supports eSIM before travelling to Denmark?
On iPhone, dial *#06# and look for an EID number, or check Settings > General > About. On Android, look under Settings > Network & internet for an option to add an eSIM or download a SIM.
How do I buy and install a HelloSIM eSIM for Denmark?
Choose a Denmark plan on HelloSIM, pay, and you'll receive a QR code by email. Scan it in your phone's cellular settings to install the eSIM, ideally before you fly.
How do I install the eSIM QR code on an iPhone?
Go to Settings > Cellular > Add eSIM > Use QR Code, then scan the code HelloSIM sent you and follow the prompts to label the line.
How do I install the eSIM on an Android phone?
Open Settings > Network & internet > SIMs > Add eSIM (wording varies by brand), then scan the HelloSIM QR code and confirm the download.
Can I install the eSIM before I fly to Denmark?
Yes, and we recommend it. Install it on home Wi-Fi so the profile downloads cleanly, but wait to activate or switch it on until you arrive unless the plan says otherwise.
When should I activate my Denmark eSIM?
Most travelers activate on arrival. Many HelloSIM plans start counting validity from first network connection in Denmark, so turn it on when you land at the airport.
Which networks does HelloSIM use in Denmark?
HelloSIM connects through leading Danish mobile operators such as TDC/YouSee, Telia, Telenor and 3 (Hi3G), automatically selecting the strongest available signal.
Is there 5G coverage in Denmark with an eSIM?
Yes. Denmark has widespread 5G in cities and along major routes. If your device and plan support 5G you'll get it where available, otherwise you'll stay on fast 4G/LTE.
How good is 4G coverage across Denmark?
4G/LTE coverage is excellent and reaches nearly the entire population, including small towns, rural areas, and the ferry-connected islands.
What download speeds can I expect in Denmark?
In cities like Copenhagen and Aarhus you can commonly see tens to a few hundred Mbps on 4G and 5G. Speeds are naturally lower in remote areas but remain reliable.
Does the eSIM work in Copenhagen?
Yes. Copenhagen has dense 4G and 5G coverage, so you'll have strong data in the city center, Nyhavn, Tivoli, the metro and at the airport.
Will the eSIM work in Aarhus, Odense and Aalborg?
Yes. All of Denmark's major cities have strong coverage, and you'll also have solid data in smaller towns and along highways between them.
How much data do I need for a week in Denmark?
For a week of maps, messaging, browsing and some social media, roughly 3-5 GB is comfortable. Add more if you stream video or use your phone as a hotspot.
How much data do I need for two weeks in Denmark?
A two-week trip with regular use typically fits in about 8-12 GB. Heavy streamers or hotspot users should size up accordingly.
How much do eSIM data plans for Denmark cost?
HelloSIM offers a range of Denmark plans by data amount and validity. Prices vary, but eSIMs are generally far cheaper than traditional roaming from your home carrier.
How long are HelloSIM Denmark plans valid?
Validity depends on the plan, commonly ranging from a few days up to 30 days. Check the specific plan's validity before buying to match your trip length.
Can I use the eSIM as a hotspot in Denmark?
Yes. HelloSIM Denmark data plans support tethering, so you can share your connection with a laptop or tablet. Hotspot use draws from the same data allowance.
Can I keep my home phone number while using the eSIM in Denmark?
Yes. The eSIM runs alongside your physical SIM in dual-SIM phones, so you keep your home number for calls and texts while using HelloSIM for data.
Should I turn off data roaming on my home SIM in Denmark?
Yes, to avoid expensive charges. Turn off data roaming on your primary line and set the HelloSIM eSIM as the line for cellular data.
Do I need to set an APN for my Denmark eSIM?
Usually not, as the APN configures automatically. If data doesn't work, HelloSIM provides the correct APN to enter manually under cellular data settings.
Do I need to turn on data roaming for the eSIM to work?
Yes. Because the eSIM connects to a Danish partner network, enable data roaming on the HelloSIM line specifically. This does not incur extra fees on your plan.
Does the HelloSIM Denmark eSIM include calls and SMS?
Most HelloSIM plans are data-only. You can call and message over apps like WhatsApp, FaceTime, Messenger and Signal using your data.
How do I make phone calls in Denmark with a data-only eSIM?
Use internet-based calling apps such as WhatsApp, FaceTime, Signal or Google Voice, which work over your eSIM data connection.
Can I use the Denmark eSIM in other EU countries?
It depends on the plan. HelloSIM offers regional and Europe-wide eSIMs that cover many EU countries. A Denmark-only plan works just in Denmark, so pick a regional plan for multi-country trips.
Will my Denmark eSIM work in Sweden or Germany?
Only if you choose a European regional plan that lists those countries. A single-country Denmark eSIM won't connect there, so a Europe plan is better for a Nordic tour.
Will I have internet at Copenhagen Airport when I land?
Yes. Copenhagen Airport (Kastrup) has strong network coverage, so your eSIM should connect within moments of landing once you enable it and disable airplane mode.
Can I get online immediately at Billund Airport?
Yes. Billund Airport is covered by the Danish networks HelloSIM uses, so you can activate and get data as soon as you arrive.
What do I do if my Denmark eSIM shows no service?
Toggle airplane mode off and on, confirm data roaming is enabled on the eSIM line, and check that the HelloSIM line is selected for cellular data. A restart often resolves it.
My eSIM isn't registering on a Danish network, what should I check?
Ensure the plan is activated and started, try manually selecting a network under carrier settings, verify the APN, and reboot the phone. Manual network selection can force a connection.
How do I top up or add data if I run out in Denmark?
You can buy more data through your HelloSIM account or by purchasing a new plan. Top-ups apply to your existing eSIM without needing to reinstall it.
What happens when my eSIM data runs out in Denmark?
Your data connection stops once the allowance is used up, but the eSIM stays installed. Simply top up or buy a new plan to resume service.
Can I use two eSIMs at once in Denmark?
Many newer phones support multiple stored eSIMs, though usually only one or two lines are active at a time. You can keep your HelloSIM eSIM and home eSIM installed together.
What is the emergency number in Denmark?
Dial 112 for police, fire or ambulance anywhere in Denmark. Emergency calls work even without an active data plan as long as there's network signal.
Is the eSIM refundable if I don't use it?
HelloSIM's refund terms apply to unused, un-activated eSIMs. Check the refund policy at checkout, since once an eSIM is activated it typically can't be refunded.
Do I need a Danish ID or address to buy the eSIM?
No. Unlike local Danish prepaid SIMs, a HelloSIM eSIM requires no local ID, registration or address, so you can buy it from anywhere before you travel.
Can I use the Denmark eSIM on a tablet or iPad?
Yes, if your tablet or iPad supports eSIM and cellular data. Install the same QR code on the device, though remember it can only be installed on one device.
Will the eSIM work on the train and metro in Copenhagen?
Yes. Denmark's rail and Copenhagen metro corridors have strong coverage, so you'll stay connected for tickets, maps and streaming while you travel.
Any tips before flying to Denmark with an eSIM?
Install the eSIM at home on Wi-Fi, download offline maps of Copenhagen and your destinations, save your HelloSIM QR code, and keep your home SIM's roaming switched off.
Does the eSIM cover ferries and the Danish islands?
Coverage is strong on populated islands like Zealand, Funen and Bornholm and near the coast. Signal may briefly drop mid-crossing on some ferry routes, which is normal.
Can I use mobile maps and rideshare apps in Denmark with the eSIM?
Yes. Google Maps, Apple Maps and local transit apps work well on the eSIM, and rideshare and taxi apps are available in Copenhagen and larger cities.
