1.
If you phone in to a radio or television show, you telephone the show in order to give your opinion on a matter that the show has raised.
Listeners have been invited to phone in to pick the winner.
PHRASAL VERB : V P
2.
If you phone in to a place, you make a telephone call to that place.
He has phoned in to say he is thinking over his options.
PHRASAL VERB
3.
If you phone in an order for something, you place the order by telephone.
Just phone in your order three or more days prior to departure.
PHRASAL VERB : V P n , also V n P
4.
If you phone in sick , you telephone your workplace to say that you will not come to work because you are ill.
On Monday I was still upset and I phoned in sick to work.
PHRASE : V inflects