Ios4 battery life

[nextjeter2]

Hello my 3gs was set up as a new phone twice with ios4 both times trying to improve my battery life. It has just been flat out terrible. I can not make it through a day. It was much better on 3.1.3 any suggestions? I cannot wait for my iphone 4

 

[Jellotime91]

I just slept for 8 hours and my battery only went down 4%... I don't know what to tell you, my battery life has been great. Is your warranty expired? Try getting a replacement.