How did the old man pull out the blacklist?

Select Blacklist or Block from the Phone or SMS options.

According to the query of Yangzhen Internet Service Center, the blacklist of old man-machine and old man-machine means that users can add some phone numbers or short message numbers to the blacklist in mobile phone settings, so as to block incoming calls or short messages from these numbers. If you want to pull out the blacklist, open the settings application of your mobile phone and find the "phone" or "SMS" option. In the phone or SMS options, find the "blacklist" or "intercept" option and find the corresponding data list.