Huawei Maimang 6 pulls the other side into the black for free. Is there a hint when the other party calls?

The other party will prompt you that the number you dialed cannot be connected.

But if you play too much, others will find out.

When a user calls you, if he is on your blacklist, your mobile phone will send you a short message saying that your mobile phone is busy or other information. Not a blacklisted user will prompt him for information as soon as he calls you. Mobile doesn't know that you don't want to answer the user's phone, but it will call you as usual. Your mobile phone lied to China Mobile, giving the other party a disguised message that the line was busy or nobody answered.