Is there a charge for "send report" set by mobile phone?

It is free to accept SMS or MMS to "send a report".

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SMS (Short Message Service) is the earliest short message service and the most popular short message service at present. At present, the length of this short message is limited to 140 bytes, which can be text.

SMS is a store and forward service. In other words, short messages are not sent directly from the sender to the receiver, but are always forwarded through the short message center. If the recipient is disconnected (the phone may be turned off), the message will be sent when the recipient connects again.

SMS has the function of sending a message to confirm. This means that SMS is different from paging, and users don't simply send short messages and then believe that the messages have been sent successfully. On the contrary, the short message sender can receive the return message and inform them whether the short message has been sent successfully.

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MMS is the abbreviation of Multimedia Messaging Service, and its Chinese name is Multimedia Messaging Service.

The size of MMS is usually 50KB, which is decided by the operator and the mobile terminal. At present, most mobile phones in China only support MMS less than 50KB.

MMS, like SMS, adopts the technology of "store and forward", and the information created by users can be automatically and quickly transmitted between mobile phones. The transmission of information is still based on the receiver's mobile phone number; When the receiver is turned off or temporarily out of service area, the information will be stored in the Multimedia Message Center (MMSC) until it can be sent correctly.

Multimedia message service needs WAP gateway, data transmission network (such as circuit-switched network, GPRS or WCDMA network) and short message center. At present, MMS service is carried by WAP, and SMS is used as a reminder, which is automatically extracted from MMS center MMSC by MMS mobile phone. In the eyes of users, MMS, like SMS, is sent from the MMS center on its own initiative.

Because MMS is a short message to inform you, it is free to send the report (but there is a charge for receiving the reading report, because the reading report is sent by the reader in the form of MMS, that is, the receiver of your previous MMS).

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References:

/view/44276.htm

/view/52043.htm

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