|My general impression of the build quailty is good, it feels really solid and trustworthy, but with some minor flaws in the design.
The keys seems good, my only complaint here is that the back button, which is used all the time when navigating, is a tad bit small.
The play/pause button and the volume buttons work well for their purpose, I have used the phone a couple of hours when walking around listening to music, and I have
not accidentally pressed them yet (they are enabled even if the key lock is activated when the hands free is plugged in).
The camera lid works somewhat well, it has opened once when I pushed down the phone in my jeans pocket, but if you don't thrust it down your pocket it should work ok.
The K750i use SonyEricssons new fast connector. It enables USB 2.0 speeds, which in real life means three minutes for 50 megabytes of data (this is measured with the ms duo card that comes bundled with the phone, and might change if you use another card). This is ok if you don't
have a huge memory stick. I have ordered one with a size of two gigabytes, and that would take me two hours to fill; therefore I will probably get me a PC-card adapter
One of the good things with the new port is that it enables charging through your USB-port, this means that you have automatically access to a charger if you bring your
cable and are near a computer.