The phone was from the outset strange, non-reproducible effects. It worked smoothly as long as the radio signal was stable - otherwise it returned often not returned to its home network back. Abroad, it hardly went flawlessly, the German border on the other hand. Unfortunately, I have been looking for the error with me (also all other functions were perfect) and have it sent is not equal to Amazon back. Finally, I was able to reproduce the bug yet - but could take 6 months only to Samsung service center to complete. The advice given therein did not succeed and I sent the phone to the specified service. And here's the kicker: Warranty repair is not possible because of alleged physical damage of the Coax connector (only upon payment of 70!). I knew by then not even know that the thing has something. There remain two possibilities: either Samsung has a disastrous quality control or the error was "invented" in order to circumvent the warranty. Both convinced me that I will never buy a Samsung device - also I had earlier with a stereo system problems that could not even play audio CDs tidy. So people prefer to give out a few more euros and buys you something at an ordinary company !!