Though, I still need further assistance, and I appreciate your efforts so far.
Currently, my iPhone does not display the caller id while in call, but the names are shown OK in the recent tap.
If I install your CallerID format fix FW 3.0 (I am using iOS 6.1.2, Firmware 3.4.02) the iPhone phone application crashes once I open it, and any caller keeps ringing me while I don't get notified. Moreover, the iPhone restarts unexpectedly and enters the safe mode!!
Is there a solution for that??