A new tweak has released naming as CallLock.CallLock is a tweak that locks your iPhone screen during a call. It can be enabled either manually or automatically and will prevent you from accidentally pressing buttons that could dial, mute, hold, or hangup a call by mistake. This is especially useful for people who have a faulty proximity sensor in their iPhone 4.
MANUAL MODE:
CallLock will override the default action of the Power button during a call to lock the screen instead of the normal end call action.
AUTOMATIC MODE:
CallLock will automatically lock your screen as soon as a incoming or outgoing call is connected.
To enjoy this tweak, your device must be jailbroken on iOS 4.x.You can download CallLock for $0.99 from the Cydia Store via BigBoss repository.
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Yo nice share!
FINALLY i can speak on my iphone!
IOS 5.0.1 does not support callLock! HELP!!!!
it does i use it try to reinstall.