1. Find a person by a name or phone number worldwide for free using Truecaller.

  2. Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.

  3. SME

    Search over 1 Billion phone numbers worldwide. Identify unknown phone numbers and block unwanted calls.

  4. WhosCall is a reliable caller ID app whose popularity has led to its adoption by many users including international media. You can now manage the numbers calling you regardless of whether they are part of your contact list or not... read more.

  5. This application both blocks unwanted calls and SMS, and helps manage a blacklist.

  6. Block calls from annoying or private numbers on your Android device. By bitfire.

  7. "Call Blocker" helps you avoid annoying calls.