Is the camera flash supposed to go off with the alarm on the iPhone 4S when it is locked?

Question

I have just recently noticed that the camera flash goes off with the alarm in a three flash pattern when the phone is locked, but not when it isn't. I can't find a way to turn it off in the settings and was curious if this is supposed to happen or if it's a bug?
Thanks in advance for your help.

Answer 1

See this veeeeeeeeeery long thread.
https://discussions.apple.com/thread/3404857
It's an issue with hundreds of phones.  Some claim it's software related, some hardware, some say it's a mixture of both.
Some people have had temporary success with quitting the Phone.app / restoring as a new phone / restoring from an iCloud backup / disabling Siri / toggling speakerphone on & off...
Unfortunately all of the above only been temporary, with the problem recurring again after a few calls, or a few days etc.
So far the only solution that seems permanent has been to replace the phone.  But even so, it's the luck of the draw to recieve a functional phone, and not another faulty one.
I'm completely annoyed as there is no Apple Store near me...... and Apple haven't even acknowledged the issue, despite the above thread being 34 pages long, as of writing.