911 actually works in Norway (though 112 is indeed what's advertised).
These are both international emergency numbers, which work without a SIM card and on locked phones, as opposed to the two specifically Norwegian emergency numbers, 110 and 113.
While the three different Norwegian emergency numbers cover different kinds of emergencies (110 for fire department, 112 for police, 113 for medical assistance), you can call any of them to get the help you need - so never worry about calling the "wrong" department. Just call the number that first comes to mind, and you'll be patched through as needed.
For anyone who is still confused about
din/di/ditt/dine and doesn't have access to the skill notes, the form of the possessive essentially depends on the grammatical gender and number of the object of possession (as opposed to those of the object's possessor):
din= masculine/feminine (inflected as masc.), singular
di= feminine, singular
ditt= neuter, singular
dine= m/f/n, plural