Every time my mobile phone sends a message, it will prompt to send and save. Where is the failure?

Text messages are usually stored in mobile phones and cards.

Failed to send and save' means that your storage space is full, and the sending is successful.

"Mail failed to be sent and saved in Outbox" means that by default, mail failed to be sent and saved in Outbox.

The mobile phone should have a setting option in the SMS option, which can set whether the SMS you sent is stored, the storage location and the storage time of the SMS, so I won't list them one by one. I hope it helps you.

Give some encouragement when you answer the question for the first time.