YOU SAID:

i think he's coming for me answer the phone

INTO JAPANESE

彼は私のために電話に出るために来ていると思います

BACK INTO ENGLISH

I think he's coming to answer the phone for me

INTO JAPANESE

彼は私のために電話に出に来ていると思います

BACK INTO ENGLISH

I think he's answering the phone for me

INTO JAPANESE

彼は私のために電話に出ていると思います

BACK INTO ENGLISH

I think he's on the phone for me

INTO JAPANESE

彼は私のために電話をしていると思います

BACK INTO ENGLISH

I think he's on the phone for me