What's the difference between being hacked on the phone and being real?

If you make a phone call, it beeps at first, and then suddenly you say you are on the phone, the other party will hang you up. If you call directly and say that you are on the phone, then you are either really on the phone or hacked.

After joining the blacklist, it has the following characteristics:

1, the phone has been unable to get through the prompt, the network is busy, there is no signal, there is a phone.

2. I sent a text message and never replied.

3. If you call with another mobile phone number, there is no such situation, which means that you have joined the phone blacklist.

Why can I still dial after adding a phone number to the blacklist?

First, the security housekeeper software on the mobile phone has stopped running (some mobile phone screen locking and background cleaning applications will stop running), resulting in the failure of harassment interception.

Second, although the phone number has been blacklisted, the interception function has been turned off, which will lead to interception failure.

Third, dual-card mobile phones, only one card is blacklisted and the other card is not blacklisted.

Security guards can only intercept short messages, not phone calls.

5. Interception of fixed telephone number in the same city failed because there is no area code on the blacklist.