You can't receive a message receipt after sending a message. What took you so long to receive the SMS receipt?

After sending a message, the message receipt is not received or received after a long time, which may be caused by the following situations: 1) The message receipt is lost in the network transmission process, but this probability is very small. 2) System maintenance, which cannot be handled temporarily, can be resumed after the system is normal. 3) There is a delay in the network, and a receipt will be received later. 4) Personalize and block some types of receipts. 5) I chose lightning short message and changed my mobile phone, but the new mobile phone does not support lightning short message. 6) The message sent by the calling party to the special number will not receive the receipt of the enhanced short message. When the calling party sends a short message through the mobile phone desktop assistant or sends a short message by fetion, the called party will reply directly, and the called party will not receive the receipt of the enhanced short message, but only by sending it to a point-to-point short message. For more service benefits, click "official website" below to answer your questions.