YOU SAID:

Then, the phone rings.

INTO JAPANESE

そのとき、電話が鳴ります。

BACK INTO ENGLISH

Just then, the phone rings.

INTO JAPANESE

そのとき、電話が鳴る。

BACK INTO ENGLISH

At that moment, the phone rings.

INTO JAPANESE

その瞬間、電話が鳴る。

BACK INTO ENGLISH

At that moment, the phone rings.