What is SMS receipt service?

SMS Receipt is a value-added SMS service launched by China Telecom for telecom mobile phone users. The original handy short message function is that after the short message is sent normally, the mobile phone will immediately display the words "the message has been sent", but this only means that the short message has arrived at the short message center normally, but it does not mean that the other party has received it. The short message receipt service refers to the service that the system sends a receipt (including short message status report and warm reminder) to prompt the user whether the short message was sent successfully in time!