I've posted about my situation on here before, but I have been carefully examining and documenting the situation and here is what's happening to me. I would be interested to see if anyone else is having this exact same problem since the update.
Prior to the update 1.0.2, I had a perfectly functioning iPhone. The battery charged perfectly and behaved properly.
Now, after applying the 1.0.2 update, this is what I am seeing.
If I take my iPhone, with the screen off, and plug it into the dock to charge it, the screen will immediately light up and show the big charging battery graphic. Normally, at the end of the night, I've usually got about 30% left, which is what the graphic shows, BUT about 2 seconds later, the amount that is filled in with green on the graphic will magically JUMP and add an additional 20% or so, making it look like my battery is 50% charged instead of 30%.
If I leave it like this, then I honestly believe that the iPhone charges until it shows full on the indicator, but THAT is not really full, it's about 20% off. So I wake up to a phone that APPEARS to be fully charged, but is actually about 20% short. This could explain why the battery appears to drain quicker.
If I put the phone in the dock, let the battery meter magically jump up 20%, then, leaving the phone in the dock, turn it off, and then back on, then the battery meter shows the correct charge (30%) and never jumps back up to where it incorrectly was before I turned it off. If it charges from this point, it still says it's fully charged in the morning, but you can tell that it has received more charge because it takes a lot more use before the battery meter starts dropping.
So it's been my experience that the 1.0.2 update causes the battery meter to just add about 20% whenever you plug it into the dock. Charging from that point gives you a battery that APPEARS to be fully charged, but is actually lacking about 20%.
Turning the iPhone off, and then back on, while still in the dock, puts the battery meter back where it is supposed to be and allows your phone to charge from that point.
I'm curious if anyone else is noticing the exact same thing.
It kinda' ***** having to turn the phone off and back on every single night, but I guess it's good to reboot electronics on a regular basis anyway.
Except for this little charging snafu brought about by the 1.0.2 update, I haven't had any more trouble out of my iPhone. I love it! And I hope the next update takes care of this battery meter issue from this update.