Hi all, My iPhone 4 is working fine except for one problem. I power down the iPhone and call it from another phone. I turn the iPhone back on and look for the missed call; however, there is no missed call under 'Recents.' If someone calls me when my iPhone is off and leaves a voicemail, I get the voicemail. However, if someone calls me when my iPhone is off and does not leave a voicemail, I have no way of knowing that they called. Is there any way to change this? Any way to see what calls I've missed when my iPhone was off? Thanks!