Local eSIM and physical SIM choices
Lyca Mobile Denmark says its bundles can be supplied as either a physical SIM or an eSIM. Its Danish page describes online eSIM activation by QR code or a one-click flow when buying on the same phone. That makes it a local-number option for someone whose handset supports eSIM. The operator says registration is optional, although it recommends registering so a lost or damaged card can be replaced without losing the number or balance. Treat that as Lyca's stated process, not a blanket rule for every Danish operator.
Read the bundle terms carefully before choosing a short-stay purchase. Lyca says bundles generally run for 30 days and auto-renew if there is enough credit; its page also describes switching auto-renewal off in My Lyca. The specific twelve-month offer on the linked page has a commitment and early-cancellation terms, so it is a poor match for a brief holiday even though it has an eSIM option. Choose a one-off or cancellable product only after checking the precise checkout terms at the time of purchase.
The Danish operator 3 publishes a 3 GB domestic subscription as another illustration of the local market, but it is a monthly subscription rather than a visitor pass. Its current page lists 60 Danish kroner per month at the time of checking, a 30-day cancellation period and data for Denmark only. Do not confuse a low monthly headline price with a prepaid travel allowance. If you need a local voice number, compare the activation and cancellation route as well as the data size.
Check the route on Denmark's mobile map
The Danish Digital Agency directs consumers to tjekditnet.dk to compare mobile coverage at a particular address. The agency explains that its map is based on calculated information supplied by operators and represents expected outdoor coverage. It is therefore helpful for screening a route, but it is not a guarantee that a phone will connect inside a thick-walled hotel, below ground or aboard every train. Compare the places where you will spend time, rather than judging the country by a single national coverage label.
This matters if your itinerary moves from Copenhagen to western Jutland, the North Sea coast or one of Denmark's islands. The agency's consumer guidance says mobile coverage varies locally and advises looking at the operator's coverage information where you will use the service. An operator map and the agency's map can help you choose between a local line and a roaming plan; both are predictions rather than a live measurement on your exact device. Download the relevant map area while connected before a long journey.
A phone advertised as supporting 5G still needs a compatible plan and local signal. The operator 3 says 5G on its qualifying subscriptions also requires a 5G-capable handset and coverage in the area. This does not establish 5G availability along a particular rail or ferry route. Check the planned stopovers in the official map and keep tickets and addresses available offline.
EU roaming and the next border
Denmark is within the EU roaming area. The European Commission says travellers with a qualifying EU or EEA mobile contract can normally use calls, texts and mobile data in another EU country at domestic rates, subject to the policy's fair-use conditions. Before buying another line, inspect your existing plan's Danish allowance and any data limit for roaming. Match the allowance to your itinerary.
The Commission also explains that roaming is for periodic travel, with fair-use safeguards against using a line permanently abroad. Check your own provider's notice about any limit and whether the plan covers a later stop outside the EU. A trip that continues from Denmark to Norway falls within the EEA roaming framework, while a ferry or flight to a destination outside that framework needs its own terms checked. Avoid assuming that all places branded as Nordic have identical treatment on every contract.
Lyca's Danish bundle page distinguishes domestic data from a specified EU roaming allowance and says a hotspot is unavailable while roaming on the linked offer. That is a reminder to inspect the specific plan rather than relying on a generic phrase such as EU included. If you are arriving with a non-European home SIM, confirm the roaming price with that provider before allowing it to use mobile data.
The first connection at Copenhagen Airport
Copenhagen Airport publishes instructions for its free Wi-Fi, which it says is available before and after security and at the gates. That gives a visitor a way to retrieve an eSIM QR code, message an arrival contact or check a rail ticket without first finding a local shop. Keep a screenshot or offline copy of the eSIM installation details as well: an email account with two-step verification can be difficult to open when the home line has been disabled and no data connection is active.
The airport's Wi-Fi is a useful contingency, not a reason to assume the same connection will work on the train north or west. If an eSIM download fails at the terminal, stay on the airport network long enough to reach the provider's support instructions. For a physical Danish SIM, confirm the exact retail or delivery route with the operator; the airport Wi-Fi page does not promise a SIM counter.
Using data on DSB journeys
DSB's app can sell tickets and display journey information, including delays and changes. The separate Check In feature has its own operating rules: DSB says a traveller must check in before boarding, check in again when changing transport, and check out at the end. Learn the particular ticket or check-in method you intend to use while you still have a reliable connection. A normal ticket purchase and the app's Check In feature are different workflows.
DSB says its app Check In feature covers much of Danish public transport but does not cover Bornholm. That exception is useful when planning a rail journey followed by an island leg: confirm the relevant ticket seller rather than assuming a tap in one app covers every connection. The DSB pages also explain that the app needs a phone and a working payment setup for its digital features. Keeping the itinerary, booking reference and destination address available offline reduces disruption if a train loses signal.
Emergency calling and a practical backup
The Danish police identify 112 as the emergency number for police, ambulance and fire services. They say a caller using a foreign mobile phone within Denmark can dial 112 without adding the Danish country code. Record the location you are visiting before leaving Wi-Fi: the emergency operator may ask for an exact address as well as what happened. For a non-urgent police enquiry, the police publish a separate service number, +45 114.
A data-only eSIM should be treated as a data connection unless its provider explicitly supplies calling. The police page explains how to call 112 from a foreign mobile, but it does not guarantee that an internet-only product can place a voice emergency call. Keep a working voice-capable line where possible, and understand the handset's emergency calling options before setting off for a remote coastline or island. Messaging over mobile data is useful for everyday coordination, but it should not be assumed to replace a telephone call to emergency services.
Before departure, test that the handset is unlocked for another provider, that its eSIM capacity is available, and that the QR code or activation information is accessible offline. Check the domestic and roaming data allowances separately. Once in Denmark, use Copenhagen Airport Wi-Fi or another known connection to verify the line, then inspect actual service along the itinerary rather than relying on a national marketing claim.
Networks our Denmark plans use
These are the operators named on our plans for Denmark, taken from the plan data, so the list follows the catalogue.
- 35G
- 3 (HI3G DENMARK APS)5G
- 3 Denmark5G
- 3 DK5G
- Hi3G5G
- Hi3G Denmark Aps5G
- Norlys Mobil A/SLTE
- Nuuday5G
- Nuuuday5G
- TDC5G
- Telenor5G
- Telenor DK5G
- Telia5G