Why is the message received by the mobile phone blank?

Don't say anything It's all the operator's problem. Nowadays, SMS is used more and more. This kind of problem is very common. It can happen whether you use QQ or not, but it will happen more frequently. This should start with the principle of short messages. SMS is sent point to point. Whether you want to reply or not, the server will generate a reply signal after receiving your message. If our mobile phone is set with SMS reminder, we will receive a short message from a short message, but this does not mean that the other party has received your short message, only that the server has received your short message. But now that the server is getting bigger and bigger, it is inevitable that there will be confusion. Coupled with the value-added services of various enterprises, this error rate is increasing. Blank short messages are mostly short messages replied by the downlink server. . Do you understand?