Your phone's been buzzing like crazy. 

你的手機直在瘋狂震動。

My phone is buzzing. Maybe it's my roommate texting me. 

我的手機在震動，可能是室友給我發信息了。

舉例:

The phone starts to ring. 

手機開始響了。

She answered her phone on the first ring.   

手機剛一響，她就接了。

舉例：

It's polite to set your phone to mute when you are on a meeting.  

當你在開會的時候，把手機調靜音是比較禮貌的行為。

You should put your phone on mute when you are in your class. 

當你在上課的時候，應該把手機調靜音。 

舉例：

lease turn off your phone at the meeting.

開會的時候請關掉手機。

Sorry sir, our plane will take off in any minute. You have to turn off your phone.

抱歉先生，我們的飛機馬上就要起飛了，您必須關機。