MCleaner for iPhone is a firewall software, which can filter incoming call and SMS according to pre-configured keyword (SMS) and phone number (could be partial match), and you can set a profile to set MCleaner working mode quickly, and also scheduler mode is supported. You can browser blocked SMS/call anytime you want, with all details. You can import whitelist/blacklist from contacts/recents/SMS, or input manually. It's easy to use and good for you when you are busy now, constantly in important meetings or discussions. The set-up is very simple, and you will get rid of all the unwanted incoming calls and SMS. Version 1.5 supports iPhoneOS 2.0.
||Free to try
||iPhone OS 1.1.1-2.0.x