Review: Samsung A900
Top message: Battery Life by MRodPA
Replying to: Re: Battery Life by danbfree
Re: Battery Life
Menu: Settings: Others: Update Phone Software.
(you have to have at least two bars of battery to do this, and can't be connected to a charger.)
If this doesn't help, do the above steps, and also try to turn off service light, put phone on Sprint Only mode, and there is even a power save mode that does most of this in one step.
It's a small phone, you trade size for battery life. Rich or whoever did this review was able to attain a day plus in testing, and most people charge the phone every night.