This is the 518th most frequent Icelandic word.
síma
The Icelandic word "síma" means "telephone" in English.
In this sentence, 'síma' is used to mean 'phone', specifically a mobile phone or similar device, as the direct object of the verb.
Ég keypti nýjan síma í dag.
I bought a new phone today.
Here, 'síma' represents the concept of a phone call or the action of answering the phone in general usage.
Hann svarar aldrei í síma.
He never answers the phone.
In this sentence, 'síma' is used to denote the physical device required to make calls, implying a landline-based phone.