This is the 3984th most frequent Swedish word.
mobiltelefon
Mobile phone.
Here, 'mobiltelefon' is used as a noun subject in a sentence to describe possession and quality of the item.
Min mobiltelefon är ny och fungerar väldigt bra.
My mobile phone is new and works very well.
In this sentence, 'mobiltelefon' is used as an object that is the subject of lending, indicating its utility for making calls.
Kan du låna mig din mobiltelefon för att ringa ett samtal?
Can you lend me your mobile phone to make a call?
Here, 'mobiltelefoner' is pluralized, showing the general reference to the usage of mobile phones in society.