answer: #Person1# thinks it's difficult to reach people who close handsets. #Person2# suggests sending short messages. When people open the handsets, they'll receive them.
documents: #Person1#: Some people are always closing their handsets, so it's difficult to inform them.
  #Person2#: Why not send them short messages?
  #Person1#: Can short messages reach them?
  #Person2#: Short messages will be kept in the short messages center. Once they open the handsets they will receive them, which is better than you can't find them.
  #Person1#: Why haven't I thought of this skill?
  #Person2#: I use short messages quite a lot. If it's not too complicated I will send a short message, which can save much phone charge.
  #Person1#: I am informed that many people used short messages to pay a New Year call, and only on the Spring Festival it amounted to 1 billion this year, didn't it?
  #Person2#: I almost can't live without messages, from which I learn about weather forecasts and stock quotations.