Excerpt: I'm using it for two years now and the only reason why I'm thinking of buying a new phone is a broken screen. It survived many fallings on different surfaces and the last one was just a bad luck. Even with the battle wounds it provides me all that Apple can: user-friendly interface, perfect phone camera, perfect music quality, perfect screen quality, reliability and etc.
Pros: Build quality, Useful dedicated 'ring/silent' button, Useful physical 'home button', Beautiful design, Perfect size, Camera, Relative security, iCloud and other backup copying abilities to make sure you don't lose all your files, iTunes store with an ability to download purchased music at any time if connected to the internet, iOS; it's my favourite OS but it has some downsides, which I explain further in the Cons list
Cons: You can only have .mp4/.m4v downloaded from iTunes, General dependence on a single particular computer, Impossibility of free bluetooth sharing (AirDrop doesn't count since it's only iPhone to iPhone), Impossibility to use some languages (like Armenian, Lithuanian and others) as a Phone language, Absence of some languages in keyboard settings, Geeks will call you gay and a slave of a consumer society for buying an iPhone
Summary: I got this phone a couple of days ago and it looks beautiful. it works great siri is rude but thats okay. The camera quality is way better than my old iphone 4. It is lighter and the one inch difference does do a lot on this phone.