Immediately after unpacking, I was really excited. The Samsung is very well made and I think for that price it looks really high-quality. Although I did not have touch-screen mobile phone, there was no problem concerning the operation. The menu is easy to understand and it takes only a short time to find your way. Of course, one has even after several hours, not all functions in the head, but gradually works very well. It is clear that the photos are to be recommended only conditionally, which tell not only me, and just as it seems to be with the headset. However, the sound is good and clear ansich, both listening to music or telephoning (D-network). Can respect O2 no experience pass. As for the battery cover, it's true that he's a little stiff, but he also had a few seconds down. Just do as stated in the description and press with some momentum. Works already .. The battery life is good, if I can still write this little even after such a short time. Voice quality, cell phone features (for example, menus, screen resolution and touch screen use), as well as the Optical have all convinced me. For this price, highly recommended!