Sean said:I doubt this is possible, but I'd LOVE an app that would let you quickly toggle battery-draining settings.
3G on/off
Wifi on/off
Bluetooth on/off
Push mail on/off
Airplane mode (disables everything AFAIK) on/off
and maybe a slider to dim brightness
Right now it takes too many steps and those are located in all different areas of the iPhone's Settings app.
Jailbreak your phone, there's an app that does almost all of these things.