A short message suddenly got stuck on my mobile phone. What happened?

This situation may be that there is rogue software in the mobile phone, or it may be a network problem. If the software is not installed before the symptoms appear, it may be a network problem. You can use someone else's mobile phone to send a message to this mobile phone and see if you can receive it immediately. If you still restart it, you will be more likely to be caught ... it is better to check the computer and check the card.