Read for delivery. Has it been deleted?

The private message changes from read to delivered, usually because the receiver deleted the private message in the read state or blocked the private message of the sender in the read state. In this case, the message in the read state will disappear from the chat record, and the sender will see that the message has been changed to the "sent" state.

In addition, if the message is not read by the receiver within a certain period of time, the system will automatically change it from the "read" state to the "sent" state. This is because the system will keep the message record of delivered status for a period of time to avoid misjudgment or deletion of messages.

Ways to stop spam

1. Don't leave your mobile phone number at will: We often need to fill in the mobile phone number when filling out the forms of some websites or applications. However, don't leave your mobile phone number at will, because these websites or applications may sell your mobile phone number to advertisers. So when we fill in the form, we can fill in a false mobile phone number to avoid receiving spam messages.

2. Use SMS interception function: Nowadays, mobile phones have SMS interception function, and we can use this function to intercept spam messages.

Don't reply to spam messages: When we receive spam messages, don't reply. Because replying to spam messages will let the sender know that your mobile phone number is valid and will continue to send you spam messages. Therefore, we should delete spam messages directly.