Mobile phone messages are often not received by the other party.

First, the receiving time set by the other party's mobile phone is 1 day. If the other party's mobile phone is turned off or out of service area, and there is no signal during this period, you can't receive SMS.

Second, the network transmission failed. Your mobile phone has no receipt report, so you can't see whether the short message was sent successfully.

Third, some mobile phones failed to send, but the prompt was successful. Fourth, the other party's SMS storage capacity is full, and so on. When the other party turns on the phone, returns to the service area and deletes the stored short message, you can receive the short message.