Send a text message to the hacked number. Can the other party receive it? Will there be a receipt reminder when you receive the text message?

You can receive it, but it will be intercepted in harassing text messages. If you turn on the feedback reminder, you can receive feedback information.

Mobile phone blacklist function:

Mobile phone blacklist is a function to prevent yourself from being harassed and intercept harassing text messages and phone calls. When you don't want someone or some people to contact you, you can set his number to the blacklist of mobile phones, so that when the number in the blacklist calls you or sends a text message, the phone call and text message will be intercepted. But you can also see the relevant tips.

How to judge whether the mobile phone is hacked by the other party;

I called the other party many times, but I couldn't get through. I can get through by dialing another number, which means it has been blacked out.