YOU SAID:

My phone has turned off because of a 台风

INTO JAPANESE

私の携帯電話は、の原因でオフにしました

BACK INTO ENGLISH

My phone was turned off due to

INTO JAPANESE

電話の電源が切れたのは

BACK INTO ENGLISH

The phone turned off.

INTO JAPANESE

電話がオフになりました。

BACK INTO ENGLISH

The phone is turned off.

INTO JAPANESE

電話がオフになっています。

BACK INTO ENGLISH

The phone is off.

INTO JAPANESE

電話がオフです。

BACK INTO ENGLISH

The phone is off.