YOU SAID:
I'm sad because my phone isn't working right now.
INTO JAPANESE
私の電話は今は動作していないので悲しいです。
BACK INTO ENGLISH
I am sad because my phone is not working now.
INTO JAPANESE
私の電話は今は動作していないので、私は悲しいです。
BACK INTO ENGLISH
I am sad because my phone is not working now.
You've done this before, haven't you.