As would be first of all the problem with the battery: The battery lasts 1-2 days with average use. However, this is not the fault of the batteries that he was slightly weak, but Android is to blame. Because it also consume applications / apps electricity that were already switched off / closed and no longer used. And sometimes, the power consumption of the "Android OS" goes up by normal 3% up to 40%. I hope that is not fixed in an OS update. (Have Android 2.3.3 on it)
And the second point is that the phone "creaks" when slightly pressed onto the right edge of the display. Because I would have liked a better processing for such an expensive device and expected.
So I get to 4 stars because the phone itself is top, but I do not want to ignore the existing problems.
Nevertheless, I would recommend this phone fully, since the problems either nor can be solved or not just occur in any device.