This has happened for the 5th time yesterday after upgrading to Ice Cream. Does anyone know what setting is causing this? Verizon does not know though they have tried. I have loaded no apps, rebooted, erases all data, yet no luck. The longest one of my phones has worked without dying is two weeks. This is getting old but since this is a company phone (they would not approve an extra $40 for an iPhone) I'm stuck with this for now.