aFirewall means Android Firewall. It allows you to configure multi rules to block different call or message at different time. Periodic rule and one shot time rule are supported.

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Please open aFirewall from Home instead of Play Store after installation.
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---aFirewall basics---
☆ To make sure aFirewall has higher priority to monitor incoming messages, please install aFirewall before other third-party messaging applications such Go SMS Pro, Handcent etc.
☆ Black list is the default list to be blocked. By default, you only need to put the number into black list if you want to block it; Check on "Unknown and private" in black list to block unknown/private/restricted/anonymous calls;
☆ Number in protected list will never be blocked; Protected conversation supports to hide protected list numbers' call/SMS/MMS;

---What can rule do?---
☆ How to hangup call; Multi hangup mode are supported. You can forward the blocked calls to voicemail or a non-existing number. And you can set aFirewall to accept and hangup blocked calls to avoid forwarding to voicemail;
☆ how to block group lists; You can set Call Blocking lists and Message Blocking lists separately;
☆ how to response blocked calls and messages;

---aFirewall data---
☆ Support to backup all aFirewall data to sdcard directory with xml format; and restore aFirewall settings from sdcard directory;
☆ Based on BackupToEmail application, support to backup blocked log and protected log to Gmail;

---aFirewall security---
☆ Password/Fake password supported;
☆ Support to hide aFirewall application icon, you can open it with SimpleDialer or system dialer;

---More features---
☆ Outgoing call blocking supported;
☆ Prefix wildcard supported;
☆ SMS keywords Block is supported;
☆ Support to block SMS message from Email address; But aFirewall does not support to block Email;