Want to avoid nuisance calls? Lots of apps offer Caller ID, call blocking and reverse-number look-ups to help you report spammers to the Federal Trade Commission.
One option is PrivacyStar Text & Call Block, which costs $3 per month for all these features, plus ad removal.
Another app with good reviews is Call Control Pro from Kedlin ($8), which crowdsources users' spam phone number reports to help all users block nuisance calls. The free version restricts the number of phone numbers that can be blocked or updates that can be made.