Joke Collection Website - Public benefit messages - Why didn't Xiaomi's SMS show that it had been delivered?

Why didn't Xiaomi's SMS show that it had been delivered?

Xiaomi's SMS did not show that it had been delivered, for the following reasons:

1. The other party's mobile phone is turned off or out of service. The short message cannot be sent at this time, so it will not show that it has been sent.

2. Due to network problems, the short message was not sent successfully, and the sent message will not be displayed at this time.