Hello, I got an iphone 6 which allegedly turned off and did not want to turn on, and so it is. The first inspection the phone was not dismantled, the computer sometimes detects it but the phone died, no reaction. But this morning I tried to run it and after 30 sec showed up 3 times the apple went out and that's it, again dead. What's the problem and where to start? Is this a software problem? Regards