is a legacy call and SMS filtering application specifically designed for jailbroken iPhones. Before Apple introduced native call blocking in iOS 7, iBlacklist was the primary solution for users seeking granular control over their communications. Core Functionality

While iBlacklist was essential in the early days of the iPhone (pre-2013), modern iOS versions now include built-in features that cover most of its basic functions:

: You can now block contacts directly in Settings > Phone > Blocked Contacts .

: Automatically blocks calls and SMS from specific numbers.

: Users can choose how the app handles blocked calls, such as sending them directly to voicemail, giving a busy signal, or immediately ending the call.

The app provides several advanced filtering features that were once unavailable on standard iOS devices:

: Advanced versions of "Do Not Disturb" that allow for scheduled whitelisting and contact-specific notifications. Blocking iPhone SMS messages - Macworld

: Historically, it was distributed through Cydia , the most well-known third-party app store for jailbroken devices.