They really don't know what the hell is causing it do they? You'd think 16mos+ on a single piece of hardware you'd have these things ironed out.
Seriously...where's the QC?
The whole reason I switched to the 4S is because I figured it'd be a rock-solid, noticeably faster upgrade to the 4, with great battery life and all problems ironed out by now. If they really don't know what's causing the problem as it was mentioned in that article, that's pretty sad.
The weird thing is, there are several different "fixes" that deal with completely different aspects of the software like:
gps
siri raise to speak
icloud
exchange
contacts
calendar....and the list goes on!
The most frustrating part for me is that I troubleshot every single one of those and tried all of the fixes and none of them worked on my old phone.
I have a theory for people who've shared my experience, i'm guessing it's a combination software/hardware issue, something about iOS 5 and the dual antenna setup...I'm thinking something about the antenna/dual antenna has to be the culprit as i've only heard great things about battery life from people who have iPad 2's with iOS 5.
On a side note, my replacement phone is coming off of it's first full charge and it's doing alright. It's been off the charger for 5 hours, with 2 hours of moderate usage (about 20 minutes of music, installed a few apps, made a few brief phone calls, and spent mb 15 minutes browsing the web with a dozen texts or so. Battery is at 77%.