Dear drStangePork,
Can you please stop reiterating the same advice on every page of this discussion? Don't get me wrong, I am pleased that you have found a fix that has worked for you as Im sure are the people who it has also worked for.
I have personally followed your instructions and unfortunately it has not worked for me! I did it yesterday, drained to phone turning off then charged without interruption until fully charged last evening. I went to bed at this point and when I woke 7 hours 36 mins later it showed 87% battery remaining and a phantom 38 mins of usage in that time! It now shows 16 hours Standby, 4 hours of usage with 43% battery remaining! I have used the phone for two 2 minute calls a couple of web searches of no more than 5 mins and numerous texts, but nowhere near 4 hours of usage.
To add, I have also followede other advise by turning off this and that which also remain off and make my 4S no more useful than a standard non-smart phone!
So whilst it is very commendable of you to purport the holy grail of fixes for the 4S, I think it is multifactorial and not easily fixed by a quick reset and drain.
Apple, I implore you, get to the route of this issue and stop denying it exists with statements such as your most recent. Please inform your Geniuses, that there is an issue and to be understanding of customers who have this issue and reassurance that you take your responsibilities seriously!