Depending on your carrier, some carriers have spam blocking apps as part of the service that allow you to block by category, and one of those may be private calls. You might check that, or also an app like Truecaller might help.
Depending on your carrier, some carriers have spam blocking apps as part of the service that allow you to block by category, and one of those may be private calls. You might check that, or also an app like Truecaller might help.