How do you know that the other party's text message has blacked you out?

If the text message is hacked, it means that the mobile phone number has also been hacked.

You can try the following methods:

Because the settings of each machine are different, the effect of blackening is different.

If it is blacked out, it may be that the mobile phone can't connect to these three situations ~ and the other party can't receive the phone and can't display the phone number, which means that the other party doesn't know when to call this phone number.

The best way to test whether you are blacked out is to change your mobile phone and call again. If you don't have the above three conditions, you will be blacklisted.