Bright burst of flash of light and the screen is crashing does anyone know of this problem this problem?

When I switch between apps, when I switch between photos and when I sign into the phone after the LockCode entryI get a bright burst of light like an old-fashioned lightbulb flash between the apps and also when I turn on the iPhone the light burst is seen again after I enter the LockCode. My screens are now crashing if I'm working on a word document if I'm looking at a photo or whatever I'm doing it's like the screen just kicks me out and I have to restart the app or the project again. I have an iPhone 5.  These issues just started yesterday after I did the new upgrade for the iPhone. Has anyone heard of these problems before having to do with the new upgrade? Does anyone know how to resolve these issues or do they know if Apple is currently working on a fix them? Any information concerning his problems would be appreciated. 
Thank you, V

Somehow the iPod started the Assorized test and it is completed. Most likely due to a bad and dying battery which need to be replaced.
To get out of the screen, Just Reset the iPod - Press Menu and Center Button for about 10 secs till the Apple logo comes ON.
The diagnostic might trigger again, until you get  the iPod overhauled by Apple or 3rd party vendors.

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