it certainly isn't "the biggest thing to happen to the iphone since iphone" If you look at the changes between previous models it really is. Just about every s

it certainly isn't "the biggest thing to happen to the iphone since iphone" If you look at the changes between previous models it really is. Just about every single component has been upgraded. There have never been this many changes at once in an iPhone. The 3GS->4 upgrade comes close but when you get into the sort of second tier of features the 4S->5 list is quite a bit longer. If you're judging it by significance of the upgrades that may be a little different. I think the 3GS->4 still wins out there. On the raw numbers though the 4S->5 simply has more changes.