Send and receive short messages

Simply put, texting is such a transit process-(setting machine A to machine B)

1. From computer A to mobile (or Unicom) SMS service platform. This process is usually very fast and will be displayed in the SMS receipt (or check the status of the Outbox). In addition, the "sent" in the phone bill actually only means that the process has been sent successfully, so the completion of this process does not mean that the short message has been sent successfully. The key that the other party really receives is the second process:

2. From the mobile (or Unicom) SMS service platform to the other B machine. This process is often interrupted and cannot be sent. For example, the other party is not turned on (the service platform will deliver the goods for you after turning on), the other party's signal is not good and the network is busy. Whether this process is completed or not, we can't actually inquire, and we don't need to inquire in theory. If the other party receives it, they will send you a short message. It should be noted that even if the phone bill is sent successfully, it is possible that the other party did not really receive it, which is often a problem in this transmission process.

As for what you said, "Look up the short message list online, there is no record." It must not have been sent successfully. The first process has not been completed, let alone the second. However, as long as the list is not displayed, there is no charge.