People always call and send messages to harass me. My mobile phone number is 5800 and there is no blacklist function.

Unless the phone itself has some function, if not. The same is true for software, and there are interception records.

The security housekeeper can intercept directly, or set the interception mode, such as shutdown, shutdown, empty number, etc. Text messages can also be blocked. If you don't want to see it, just turn off the prompt icon and you won't see it. I just use the security housekeeper. Very awesome. Remember to give it to the Olympics if you adopt it.