My iPhone 4 turned off by itself and won't turn back on?

I would try to hold down the home button and the sleep/wake button for 10 seconds but my sleep/wake button does not work. I have also plugged my iPhone up to the computer and to the wall. Nothing is working.

Drop it in the water?
on the ground?
in the heat?
in the cold?
and a nother very rare possibility is that the battery connecter broke or the battery isn't working fine,
to take the back of and make sure the battery is all fine buy http://www.amazon.ca/...003DKQ6CA/ opener tool to check it
VERY ODD SITUATION YOU HAVE

  • My iPhone turned off by itself and turned back on while using a app? When I was on YouTube my phone just shutted off by itself then turned on. Is there something wrong with the phone. Also when I click my home button one time the phone sometimes wouldnt come on till the second click. What can I do?
  • My iPhone turned off and won't turn back on? I set my phone down while i was on the computer, didn't use it for like 15 minutes, and when i looked at it the screen was black and it shut off. It was on like 80% battery so it didn't die. I tried plugging it in to the charger to see if i could get it to turn back on but it will not turn on. I don't know what happened!
  • My iphone turned off and won't turn back on? - 1 My iphone does have a cracked screen, however it works fine. Anyways the battery % was at 14 and the my apps kept crashing just before it shut off. Now I've tried to home & lock button, plugging it in for a bit, it doesn't say it's dead but it still won't turn on.what's wrong?
  • My iPhone turned itself off and back on? An hour after I completely reset the phone, the phone screen went dark and then the Apple logo appeared again. So it seems that my phone just turned itself off and back on… But does anybody have any idea why? It hasn't happened since, though.