At the best smartphone that I personally had so far if it was not would have been a very annoying problem. It started the display that has been shut down permanently. When the solution Battery rausnehmen with and do it again purely nothing brought and the display remained black or smartphone bicht was concerned more, I had to run to guarantee and repaired it. It went back to the manufacturer and laaaaange 4 weeks after I got it back with the comment that they had to replace the entire motherboard and I have thus all data will be lost. But was not that bad What still useable. If that would not have been then full 5 stars but so unfortunately only 2 Ps: habes the phone not purchased from Amazon but with NEM professional to me.