CALL CONTROL -CALL BLOCKER .
This application is developed by Kedlin Company and it comes up with some amazing features. This application allows you to fully control who can make phone calls to you. Just install this application on your android phone and you will be able to blacklist any specific number, numbers with specific area code, private and unknown calls etc. It can automatically block active spam callers that are reported by other community members. Another amazing feature is Pickup/ hangup that will drop the call automatically just after receiving it. So, it will charge the person who is making spam calls to you. With reverse lookup functionality you can get information about the person who is irritating you and after all this application can be downloaded free from Android Market.