Today my iPhone shut off instantly as I pressed the sleep/wake button to wake its screen; the phone was on. There was no spinning animation as it shut down. I briefly saw the screen flash to the "locked" view before it went black.
When I restarted the phone it indicated that I had 42% battery remaining.
At the time of the "crash", I was near the finish of a 2.5 mile run, and I was running a development build of iMapMyFitness. It was relatively cold outside — probably between 30 and 40 degrees F.
I downloaded an app called System Log, and it shows the following two diagnostics with timestamps just before the crash. The next diagnostic is approximately 8 minutes later after I restarted the phone.
Message
Exiting...
Facility
com.apple.console
ASLMessageID
655
Level
5
Sender
com.apple.assetsd
Time
1325797737
PID
78
Message
MultitouchHID(1cd0e030) uilock state: 0 -> 1
Facility
kern
ASLMessageID
656
Level
5
Sender
SpringBoard
Time
1325797751
PID
30
Is this indicative of an iOS defect, an app defect, a hardware problem, or even something else?
Best Answer
It's a software problem, however, with the log you posted, it's hard to tell exactly what caused it.