请尝试着编写一小段上海到北京的航线广播词（可以中英文）。

请简述手机从开机到驻留到一小区，开始读取广播的全过程。

飞机下降期间，盥洗室停止使用。

Before landing, seat backs and tables should be returned to the upright position.

Fasten the seat belt while the Fasten Seat Belt Sign is on.

Passengers can leave valuable belongings and important documents on plane during the stop-over．

经停航班，有可能出现前段航段由A航空公司承运，后续航段由B航空公司承运的情况。

In case of delay, passengers could ask flight attendant for the information about his or her subsequent flight.

Passengers can leave valuable belongings and important documents on plane during the stop-over.