I am missing calls occassionally. I have my iPhone 5 set to vibrate when in silent mode. I turn the ringer off while I am at work so as to not disturb others. I put the phone in my pants pocket. Today I noticed that I missed a couple of calls while sitting at my desk. So I did a test. Phone out of my pocket - I called and it vibrated. I put the phone in my pants pocket - I called - my iPhone never vibrated but did show that I missed a call. I am running iOS 6.0.2. This has been happening for a while but occasionally it will vibrate when a call comes in. I am wondering if its the proximity sensor detecting my body while the phone is in my pocket. Do I need to return this back to Apple for a new phone?
Thank you! Your instructions were very helpful!