Verizon Call Filter:

1) Does not work.  Spam calls keep coming through. Maybe 1 call out of 100 is caught by Call Filter.

2) I have a Samsung Galaxy and in the Phone app settings I have toggled the Block Unknown Numbers button to On so they can go to voicemail. Verizon has blocked this feature in Samsungs phones so that they can sell their Call Filter premium.

3) When I did have Call Filter installed, it drained my battery, almost 6% per battery charge.  Thus, I uninstalled the App as useless and drains battery.

4) I had to download a third party app called Stop Call and this did the trick for me.  In settings, I toggled the button to block all calls not in my contact list.  The app does as it says and spam calls go to voicemail and rarely will spammers leave a voicemail.  I also set up this app so that the silent ringer is on so that the spammers gets frustrated with multiple rings.  Also, I don't won't to to be bothered with  notifications from the app and in settings I toggled notifications to be off. This is the App:

https://play.google.com/store/apps/details?id=com.mglab.scm

5) I started reporting these spam calls to the Do Not Call Registry:

https://www.donotcall.gov/report.html

I wish Verizon would get their act together:

1) Don't block the stock call  blocker app on Samsung and other devices.  Your company makes enough profit.  Verizon also blocks other Samung apps so that they can charge customers for their apps.  Example is Samsung Cloud which gives Samsung Galaxy owners free 15 GB of storage but Verizon customers who own a Galaxy are excluded.  I could go on about other free apps that Verizon blocks so customers purchase theirs for a price.  But, no time to list all of these.

I hope the above helps.  Thanks