My battery life is the same. The funny thing is that I don't think any update or phone upgrade changes the battery life one iota, but rather people are playing with their phones more than they realize because it's now new.
What I have noticed on my 5 and my wife's 4S is that it does crash out MUCH more often. Prior to the update I would have a crash maybe monthly. I've had at least five since updating last week.
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2014 CC R-Line DSG | 2010 S4 Sold | 2010 BMW 135i Retired | 2006 Lotus Exige Sold