I appreciate everyone's comments and I agree it sounds like the phone is hitting your cheek and pressing numbers. If you are not able to duplicate this issue when using speakerphone, it sounds like this is the issue. The phone does have a sensor to test when the phone is near your face. If you move the phone slightly or move your head, or your hair gets in the way, it can block the sensor.
No as I specified in my original post the minute alert is shut off. Also the touchscreen is black and inert while on the phone so I don't think its my cheek. I also make sure not to touch any of the physical buttons on the phone. I may take it into a verizon store and see what they can do since I have been having other issues especially since the recent software update. Thanks for all of your replies though.
After having this happen repeatedly I am thinking about going into a verizon store to see what they have to say. I have not been able to replicate the sound by intentionally pushing any of the buttons on the phone even its not right near my face. Additionally when the buttons do sound they make a different sound than the one I am hearing over the phone. Any further ideas?
Try downloading Z-DeviceTest and test the Proximity Sensor, just activate test and plase finger over right corner of the ear speaker and the readout should show a distance change, mine shows 3000 in distance when I cover sensor...
Oh wow cool app wildman. Yes its showing 3.0000 cm on the proximity sensor test.
Well that verifies its not a bad Proximity sensor.. So I would agree with the others reports that you may be unconsciously face dialing, I have learned that the sensor can be a bit responsive with the phone being positioned on face a curtain way, maybe this is you situation, if you test it on speaker phone or Bluetooth and do not have it happen this has to be the situation.