RxDial

RxDial was designed to provide larger buttons on the iPhone for dialing telephone numbers. RxDial does not stop there. It also speaks the number and provides tactile feedback by vibrating the phone. Of course this is configurable in the setting area of the phone. RxDial is also great for individuals who have a hard time with touching the buttons by providing a larger area for your finger to touch.
Once you have completed entering the numbers and pressed “CALL” the application hands over control to the standard phone application.
RxDial is simple to use and helps remove the frustration of not being able to read the number on the standard iPhone phone application keypad.