My iphone battery is draining...........ALOT

To me, this sounds very typical of the iphone or ipad. Also battery life diminishes over time.
 Question?
     Why do you not charge you phone over night?

Hey, shahryar2002!
I had this problem too, but it started when I updated to 4.0.1
The little things you can do about your battery life:
Turn off wifi when you don't use it.
Turn off the push function.
Turn off the vibration when you're not in silence mode.
Reduce the brightness.
If you have some multitasking app just remove (this feature suck up so much juice)
The big thing you can do:
Use Battery Doctor Pro. It's important to be the Pro version, cuz it helps a lot!!
Charge it full cycle and you'll notice the difference.
P.S. You can buy Battery Doctor from AppStore or download it cracked (for free) from apptrackr(dot)org
P.S.2 @moderators I hadn't time to read the rules here so if there's something wrong about posting this web site for cracked apps please edit my post or let me know.

Hello,
           I also have an iphone 3g but i never faced this problem. my battery is good and gives nice backup. i will ask about this problem from some of my friends who also have same iphone. so if i get good information then i will tell you.

thanks!!
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NO LINKS

Try streaming some radio or video from the web.