Originally Posted by mediyoga
I agree but I need to see the locked screen whereas on the usual kind of cell phones the blinking light or audible alarm tells it faster. Mebbe I am lazy.
I completely agree. If the phone was locked when they call there will be an alert on the screen when you hit either the home or power button. It will tell you who you missed the call from and if they left you a voicemail that as well.
Cydia is your only possible option I believe...I however havent heard of any such program. I hope you find one. Its something Id actually be interested in as well.