Focus on the pronunciation of phone in
English definition of “phone in”
phone in — Phrasal Verb with phone
/fəʊn/ verb [I or T] COMMUNICATIONS
› [I] to call the place where you work on the phone: He phoned in to say that he was stuck in traffic and would be late.
phone in sick › to phone and say you are not coming to work because you are sick: She phoned in sick on Monday morning.