Recommendation for Android call blocker needed

   I receive frequent telephone calls from telemarketers on my Samsung Galaxy S6. I am looking for an Android app that maintains a frequently updated list of spam callers and blocks callers who are on that list. Blocking text messages as well is not a concern. Any suggestions? The app does not necessarily have to be free as I am willing to pay a reasonable amount.

I know that Norton Mobile Security can block all callers who are not in my phone's contact list, but I am not interested in this limited feature as I sometimes  receive telephone calls from unknown callers that I want to accept.

I have done some research but see that many of these apps are offered by unknown developers and I am reluctant to offer access to my telephone call information to them. Thanks!

I have no experience with any app like you are looking for. And I agree you should be wary of unknown developers.

Have you tried to see if there is a Do Not Call list for your location? Although not 100% effective, they might help cut down on the marketing calls.