screen going on and off

Hello
I have a serious dilema and would like to as you if you could help me.
All of a sudden last night while my nokia bluetooth was conected to my iphone I got a message that sayd that there was some device that is not working properly with my iphone, and if I would like to turn on airplane mode. I have been using this bluetooth for a while now and it worked, and works perfectly.
The same situation happened before, when i connected some headphones from an older ipod. To fix the situation I had to reinstall everything, but now i want to find out a sollution for this. I feel like using windows again when reinstalling every other month.
The screen illuminates about 2 times per minute, like when you push the home button, and it eats up my battery, besides being annoying.

So.. if any of you have any suggestions.. please give me a hand.

Thank you.

Just guess here but it could be a issue with your sleep/wake button, has the phone ever been dropped on that button?

Could be the sleep button.. i mean, it was dropped. I don't remember landing on the button, but, why does it go away if I reinstall the os ?

I'm just giving you my best guess based previous past experiences working on iPhones.
Personally I'm leaning towards this being a hardware issue and not OS related.

Now if it were me I would get my iPhone tools and suction cup out and pull that bad boy apart and see if it is, The sleep/wake button.