Occasionally I get the message about TouchID needing my password after reboot on an iPhone 5s running iOS 8. Problem is, I haven't been rebooting my phone, so the message is confusing to me.

So I'm concerned my phone is rebooting itself in my pocket without me knowing it. I want to know for sure if my phone is rebooting by itself, or if the TouchID message is just erroneous.

How can I find out if my phone is rebooting by inspecting the logs for power off / power on events?

  • sometimes just resetting off/on the cellular would fix that
    – Ruskes
    Commented Feb 15, 2015 at 18:01

1 Answer 1


There appears to be an app called "System Status Lite" that is capable of displaying the system uptime (which should be the time since the last reboot). I haven't used it myself, so I can't speak to its accuracy, but here's a store link.

  • Works. Good find. Seems accurate.
    – Eddified
    Commented Feb 15, 2015 at 23:49

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