The mobile phone is an ios system and is often harassed by such spam messages. Power failure is useless. What else can I do?

Apple mobile phone to prevent harassing calls;

1, ios's mobile phone system comes with such a function to intercept some harassing calls.

2. Do not disturb mode can be turned on in the phone settings.

3, that is, install third-party software to intercept harassing calls after jailbreaking, such as Tencent mobile phone housekeeper.