picking up
 

I heard this phrase in a movie: "She's not picking up."
I'm talking about not picking up a phone.

Can someone tell me what "picking up" is in the phrase above? is it a phrasal verb? thank you!

Re: picking up
 

Yes - it's a verb plus adverb, so a phrasal verb. Here it's used intransitively, but the full meaning, as you say, would be :

She's not picking up the phone.
She's not picking the phone up.

The fact that

a) it can be used intransitively
and
b) when it's transitive the verb and particle are separable

shows that the particle is an adverb (rather then a preposition) and it's therefore a phrasal verb rather than a prepositional verb