Is leaving a message the same as sending a text message?

It's different. The message mailbox of Unicom secretary is mainly used for voice messages, and the short message mailbox is mainly used for sending short messages. The use methods and charging standards of message mailbox and SMS mailbox are also different. Message mailbox is generally free, and SMS mailbox is charged according to the number of messages sent. Therefore, leaving a message by the secretary of Unicom is different from sending a text message.