ppel
Guys, please don't hesitate and go back and exchange your S iphone NOW!
It's a battery issue / flaw.
I heard from someone who does distribution for Mac, but Apple did not make an anouncement "yet".
I had my 3gs monday, unlocked, all worked fine on US Tmobile and my Belgium carrier.
Overnight i did a full charge, in the morning it was empty??
I did run some test, as i thought it might be an unlock/jailbreak issue, which was not, then by deleting app by app, and waiting to see if there was a "hole" in one of the apps due incompatibility wth 3.0 ...again, nothing.
Meanwhile my iphone went in less then 3 u -50%!
Day after, i went back to the Apple store, and i saw the guy running a diagnostics app i never saw before.
he came back and said, "Nope" i see no issues here but i'll exchange it".
new 3GS, used Wifi up to 4 u...did email, playing games , streaming music for up to 5 u ...and now..3GS nicely runs just over a small 2 days in batt LIFE.
So i guess and i'm pretty sure, its the phone itself!
DON'T FORGET, if you DID do a jailbreak, backup your iphone, do a full restore and then return it, otherwise bye bye garantee.
Hope this helped!