From the Incredible forum:
Further reading suggests that if you do a lot of Facebook, MySpace, or Twitter (I do NONE of that crap), then you might see a difference in not getting updates as timely.For those of you having to charge battery every 4-5 hours, I have the solution. I take no credit for this as I saw it on another forum. Go to settings>wireless&networks>mobile networks>Enable always-on data. Uncheck always on data. Your phone will still receive email,text,& phone calls as before as well as internet usage but your battery will last a lot longer.
Currently at 37% after 9 hours of use compared to being completely dead after 4 hours.
Thought I share with my Eris brethren (ans sisthern).