The iphone, like all apple products, has a minimal design, it looks slick, sophisticated and - that's right - a little bit futuristic, even if the weight of the thing makes it hang heavy in the pocket. The menu is also simple to use and similarly nicely designed; obviously if you're stepping up to using an iphone for the first time, it takes some time getting used to it as with anything, but it's easy to become comfortable with. The thing I found hardest to get accustomed to was the touch-screen keyboard (I have man-fingers, and therefore had to adapt and tap the screen with the large things more gently than I was doing) and, most of all, the auto-correct function. I'm sure we've all heard of Damn You Autocorrect, and there's a reason why there's a website dedicated to it - if you're not careful, the iphone will change words (even those that exist) into something completely unrelated to what you originally intended to write. The best thing to do is read over your texts before sending. Those occasional issues aside, autocorrect is quite handy for when you're quickly bashing out a text, and it more often than not finds the right word you were looking for.
The camera function is good too; a little zooming will lose quality and clarity, but without it's a damn good camera, considering a lot of camera phones take some awful pictures. I've managed to take a few good-looking pictures with this phone, which is good for when you want to capture a moment and all you have with you is your phone.
I don't have access to the internet on my device (this is a fault with the phone itself that I'll hopefully get fixed soon) so I can't review that extensively, but I've used the internet explorer function on my dad's, and I can say this is where the iphone poses its only real problems for me. I suppose you shouldn't really complain when you have the option to use the internet so freely on your phone at all, but I've found the unpredictable signal on the iphone hugely frustrating. You can have full access to the internet at one moment, then the signal will completely cut out the next. It seems like a very first-world, privileged man's problem, but internet explorer when I use the iphone is very slow and often very irritating as a result.
Still, this is a minor quibble for me as I have no use for the internet unless I'm working at home, in which case I have my laptop. It may be better to read another review regarding internet useage on the phone as I use it so rarely but, overall, the iphone is a very good product.