Yes i have a real iphone and i just came back from china where i had a good look at their clones too.
While i was over there i saw 4 different clones of the iphone including one which the chinese would call the 'A' clone.
They were all crap, reason being that they are only the same as the iphone in the sense that they look kind of like it.
The A clone was almost identical in size /material and the others were way clunkier when you looked at them from the side.
The actual screen interface is in most the clones either nothing like the iphone or badly ripped off to the point that it kind of looks the same on screen with the same icons etc but scolling is bad, fonts are bad and functionality is not the same...and the ones i checked out were seriously lacking memory(ram)
....remember too that anything apple releases is in no way compatible as it doesnt run OSX.
..you would be way better buying something else or the real iphone.