YOU SAID:

I'm dying to know what's on his phone.

INTO JAPANESE

電話の内容を知りたがってる

BACK INTO ENGLISH

He wants to know what's on the phone.

INTO JAPANESE

彼は電話の内容を知りたがっている。

BACK INTO ENGLISH

He wants to know the details of the call.

INTO JAPANESE

電話の内容を知りたい。

BACK INTO ENGLISH

I want to know the details of the call.

INTO JAPANESE

電話の内容を知りたい。

BACK INTO ENGLISH

I want to know the details of the call.