Huawei mate40pro SMS blacklist information and ringtones.

Adding blacklist information and ringtones to Huawei mate40pro SMS is the reason why the mobile phone system did not intercept it in time. The principle of blacking out is that the blacked-out number makes a phone call, and the SMS just comes in, and the phone is automatically hung up and rejected by the system before it rings. The black screen only plays the role of intercepting short messages. Whether the SMS can be received depends on the operator, and the situation will be received. Otherwise, the other party's SMS will be white-haired, and the operator will earn SMS fees. Blacklist is actually to transfer the short message to other places to save, and will not be deleted directly. It depends on how the blacklist software is set up.