Callbar question

I have a iphone 4s and I have the untethered jail break on my phone. My question is how do I stop the incoming caller's picture and name from coming up on my screen when the phone is in a locked mode (blank screen) I thought that the call bar banner was supposed to come on the top of the screen with the person's name and maybe a number that would be showing. It used to do it but I had to restore my phone and jailbreak it all over again. Can someone help? I uninstalled it (call bar) twice but to no avail.