CallTell is a new jailbreak app that will tell you who’s calling before your phone starts ringing. If the person who’s calling is in your contacts, it will just say his name. How cool is that? The app also works with text messages and can go as far as reading the text message to you!
CallTell only works on the iPhone 3GS and the iPhone 4. All options can be enabled/disabled within the Settings.app.
You can download CallTell from Cydia for $1.99. Tell us what you think about this app if you download it.