Iphone 4 initiating other apps while on phone

[bhansensfd]

My Iphone4 is ending calls, initiating facetime, muting calls, turning on speakerphone and initiating camera (one time took a picture (with flash) while I was on the phone). I am sure this has something to do with proximity sensor that blacks out the phone screen when you put the phone up to your head. I never had this issue with my previous Iphone. I was wondering if anyone else has experienced this or knows a solution or if one is in the works.

 

[gruler]

Proximity Sensor not working

Yes, when I bring my iPhone 4 to my ear the proximity sensor is not kicking in and the screen stays on and active. I too had the speaker kick on when I tried to cradle the phone between my ear and shoulder. I have rebooted to no avail. Going to take it to at&t or Apple store.