After sending a text message, there is often a prompt that the message receipt is not received. What is the reason?

If you do not receive a text message receipt after sending a text message or it takes a long time to receive a text message receipt, it may be caused by the following situations: 1) The text message receipt is lost during network transmission, but this The probability is very small. 2) System maintenance, temporarily unable to process, will resume processing when the system becomes normal. 3) There is a delay in the network, and you will receive a receipt later. 4) Personalized settings were made to block certain types of receipts. 5) Lightning SMS was selected and the mobile phone was changed, but the new mobile phone did not support Lightning SMS. 6) The calling party will not receive the enhanced SMS call receipt for text messages sent to a special number. When the calling party sends a text message through the mobile desktop assistant or Fetion (with a prefix before the other party's number, such as 1065919110), If the called party replies directly, the called party will not receive the enhanced SMS caller receipt. Only point-to-point SMS can be received. SMS receipt refers to a service in which customers immediately receive a receipt SMS after sending a text message using a China Telecom mobile phone. The content of the receipt includes status information and additional information indicating whether the recipient has successfully received it. The length of the additional information is limited to 44 characters (including punctuation marks), and the content involves culture and entertainment, life and health, practical knowledge, hot events and other fields. To learn more about service discounts, click the "official website" below and customer service 220 will answer your questions.