On Wed, 23 Dec 2015 14:39:46 -0600, Mark Lloyd
wrote:

[snip]

You use the basic blacklist - whitelist basically not required. The
library or store won't be on the "universal" blacklist.. Nor will your
friends' friend's phone your friend borrowed. If you get a call from
a caller you don't want to hear from a gain you add it to the
"personal" blacklist.

That blacklist won't include the 8 numbers junk callers use today, the
12 (different) ones they use tomorrow, the 9 new ones they use the next
day, ....

[snip]
You'd be surprized how quickly the "global" blacklist gets updated.

I get about 1 a month now instead of 5 or 6 a day!!!!