What do I need to buy a mobile phone contract?
There are many different telephone companies in Denmark and most have shops in Copenhagen, where you can go in and ask questions about telephones and contracts. Most companies require that you have a CPR number in order to get a telephone contract.
See how you get a CPR number at How do I get a CPR number?
Some companies also require that you are a resident in Denmark. Go to How do I apply for a residence permit?
If you buy the actual telephone over the Internet, you have to have a NemID and a Dankort or a Visa card. At some places you also have to be a Danish citizen to buy a telephone over the Internet.
Read more about getting a bank account and a Dankort at Private economy.
If you don't have a NemID go to How do I get a NemID?
You can also buy a telephone with a prepaid card; in this way you do not need a contract. There are normally no requirements for buying this type of telephone.
It is best to ask the telephone companies directly as the requirements vary.