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Updated July 22, 2026
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Getting a working phone number in Denmark is one of the first practical hurdles you’ll face – especially if you worry about needing a CPR number, paying too much, or ending up with poor coverage outside Copenhagen. This guide walks you through the top providers, the activation and top-up steps, and the usual problems expats run into.
- Prepaid SIMs are the easiest option for short stays; postpaid plans usually require ID and a Danish address (and sometimes a CPR number) .
- Major networks: YouSee, Telia, Telenor and 3; many MVNOs (Lebara, Lycamobile) lease these networks.
- Activation commonly takes minutes with a physical SIM; eSIMs use a QR code and are supported by most big providers.
- Top-ups: app, online, vouchers in shops, or auto top-up by card or MobilePay.
Top 5 SIM Card Providers in Denmark
Below are the providers most commonly used by expats and visitors. I focus on what matters to you: coverage, ease of getting started, international call options, and whether English support is available.
Lebara
Lebara is an MVNO aimed at price-sensitive users and people who make frequent international calls. If you want a simple prepaid experience with English support, Lebara is one of the friendliest options – and you can read a deeper review at Lebara Denmark: prepaid SIMs, plans and how to get started 2026.
- Coverage: Uses other networks (Telia/Telenor), so coverage is generally good but depends on the wholesale provider.
- Why pick it: Easy prepaid bundles and low-cost international minutes.
- Watch out for: MVNOs can sometimes be deprioritised on a network during congestion.
YouSee
YouSee (part of TDC) is known for wide national coverage and reliable speeds. Plans can be pricier than budget MVNOs but are solid if you need stable service outside cities.
- Coverage: Very extensive nationwide.
- Why pick it: Strong coverage if you travel to rural areas; easy switch to home broadband bundles if you settle longer term.
- Watch out for: Higher monthly price for some postpaid packages.
Telia
Telia offers competitive plans with good customer service and frequent deals for data-heavy users. Their postpaid packages are popular with people planning to stay in Denmark longer.
- Coverage: Excellent in urban areas, broad nationwide reach.
- Why pick it: Balanced choice between price and performance.
- Watch out for: Postpaid sign-up may require ID/address verification.
Telenor
Telenor combines competitive pricing with solid customer support. Many MVNOs, including Lycamobile, run on Telenor’s infrastructure.
- Coverage: Very good across towns and smaller cities.
- Why pick it: Reliable service and good roaming options.
- Watch out for: Some cheaper MVNO plans on Telenor can have lower priority during network congestion.
3
3 (Three) is popular among students and heavy data users thanks to aggressive data packages and competitive pricing in cities. If you spend most time in Copenhagen, Aarhus, or Aalborg, 3 is a strong pick.
- Coverage: Excellent in major urban areas; less dense in remote rural spots.
- Why pick it: Great data deals and promotions aimed at younger customers.
- Watch out for: If you need coverage on islands or very rural areas, check a coverage map first.
Lycamobile
Lycamobile is another MVNO focused on cheap international calls and simple prepaid top-ups. For a quick, low-cost prepaid SIM that works well for staying connected with family abroad, see Lycamobile Denmark (prepaid SIM) and 3 solid alternatives 2026.
- Coverage: Runs on Telenor’s network-good coverage overall.
- Why pick it: Budget-friendly international packages and easy prepaid top-ups.
- Watch out for: Occasional MVNO limitations and dependence on the host network.
Understanding Denmark’s Mobile Network
Denmark’s network market is built around four main operators (YouSee/TDC, Telia, Telenor, 3). Smaller companies (MVNOs) rent capacity from them and sell simpler, often cheaper plans. That means you can get low-cost options, but check real-world coverage before you commit – network quality can vary by region and provider.
For a broader comparison of the networks and how they perform, see our breakdown of the Top 6 Mobile Networks in Denmark for 2026 and read about phone purchase and compatibility at Mobiles in Denmark: Your options as a foreigner 2026.
Registration and ID: some postpaid plans and certain eSIM activations may require proof of identity, a Danish address, or a CPR number. The exact requirements vary by provider and plan – always check the provider’s signup page before you buy. .
How to Activate a SIM Card
- Insert the SIM: Power off the phone, insert the physical SIM into the tray or follow the eSIM QR instructions if you bought an eSIM.
- Initial boot: Turn the phone on and wait; many prepaid SIMs auto-activate within minutes. If nothing happens, follow the printed activation code or SMS instructions that came with the SIM.
- Register if required: For some postpaid plans you will need to register online and upload ID or enter a Danish address. Keep your passport or residency card ready.
- Set APN if needed: If mobile data doesn’t work, enter the provider’s APN settings (listed on their site) in Settings → Mobile Network → Access Point Names.
- Test: Make a quick call, send an SMS and open a webpage to confirm voice and data work.
eSIM notes: eSIM lets you activate without a physical card – providers will send either a QR code or an activation link. eSIM is handy if your phone supports it, but some MVNOs don’t offer eSIM options yet.
How to Top Up Prepaid SIM Cards
Topping up is straightforward and flexible. Choose the method that suits you best:
- Provider app or website: Most providers let you top up with an international card and save payment details for future use.
- MobilePay and smartphone payments: Many Danish providers accept MobilePay or other phone payment methods – handy if you already use mobile payments in Denmark. See tips at How to pay with your smartphone in Denmark 2026.
- Vouchers in shops: Buy a top-up voucher in supermarkets, kiosks or convenience stores and follow the instructions on the voucher.
- Auto top-up: Set a card to auto top-up when balance drops below a threshold – useful to avoid losing your number.
- Bank / ATM: Some banks or ATMs offer mobile top-up options – availability depends on the network and the bank.
Tip: If you expect frequent top-ups, install the provider’s app right away – it usually shows balance, expiry date and lets you buy add-ons quickly.
Troubleshooting Common Issues
- No signal: Restart the phone, check network selection (automatic preferred), and verify you are not in airplane mode. If you still have no signal, confirm the provider has coverage in your immediate area.
- SIM not recognised: Try the SIM in another phone to check if the SIM or phone is the problem. Make sure your phone is unlocked for SIMs from other countries.
- No mobile data: Check that mobile data is turned on and the APN settings match your provider. Also confirm you still have allowance on your plan or that the data bundle is active.
- Problems making international calls: Confirm you have the correct international prefixes and that your plan includes international minutes or a calling add-on.
- Billing or activation delays: If a postpaid activation is taking long, contact the provider and keep a copy of any ID or payment receipts you submitted. .
- Customer support: Most big providers offer English support. If an MVNO is unresponsive, you may get faster help from the host network’s customer service.
Pick one provider based on where you’ll spend most time (YouSee or Telia for broad coverage, 3 for city data deals, Lebara/Lycamobile for cheap international calls), buy a prepaid SIM at the airport or a shop, and follow the activation steps above. If you plan to stay long-term, compare postpaid offers and required documents before switching.