What's the difference between being hacked and turning it off?

The difference between black screen and shutdown:

1, the voice prompt is different, and the voice prompt is black: Sorry, the number you dialed cannot be connected for the time being. Voice prompt: Sorry, the number you dialed is power off. Of course, you can set other settings when the screen is black, but you can only hear this when you turn it off.

2, dial a different number, and then change a number to broadcast black, you can get through, but you can't get through when you turn it off.

3, the contact information is different, the black phone can be changed to get through, but if it is turned off, all contacts and strangers can't get through. The shutdown is usually caused by the exhaustion of mobile phone power.

Lahei will have the following situations:

If a WeChat friend is blacked out, when sending a message on the friend side, it will prompt "The message was sent, but it was rejected by the other party", and a red exclamation mark will be displayed in front of the message. After the blockade, sending messages will always fail until the blockade is released. At the same time, my friends can't receive the messages. Chat records will not disappear after hacking.