Why does my iPhone 4 die so fast?

I've already tried a lot of things n there not working so does any 1 might have any new tips on how to save batterie please help. And is it possible that i might need a new batterie

Are you closing out all your apps? If you leave them running the background, they will use more power despite claims to the contrary.

Hi! The case may be that you need a new battery but try these tips first they help for me!
Turn off Bluetooth
Turn of location services
Turn down the brightness
If you have data roaming turn it of when you aren't using it
Cancel all you apps if they aren't in use(double click, hold down, press the red minus button)
These work for me and my iPhone lasted about 16 hours. Goodluck!

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