haier D1200P - Manual (Page 28)

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The sender's phone number is displayed. When the sender's phone number is
stored in the contacts list, the sender's name is displayed instead of the phone
number.
Press key to display the whole message details, the message contents,
the phone number who sent it and when it was received. Here pressing key
allows you to call the sender.
Table [1]: The message icons in Inbox