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I have the same problem. It's not the hardware. It is something inexplicable so far. I received my phone and the same day I updated via OTA to 7, made the process all right, when it started it was this black screen. I was able to flash for the latest version of ROM 7 as Firmware Upgrade and then again as Download only and then it solves the problem, but every time I turn the device off or on again, the black screen happens. The device is a bullet, very fluid when it is without the black screen, does not appear any problem. UMI leaves us on hand with these buggy ROMs. It's very frustrating, I begin to understand why people buy iPhone, they pay dearly but have no headache. I discovered a way to see the screen, to be able to turn off the device to make the flash, connect via USB on the pc and take a print from the screen, go in the file manager by the pc, Pictures folder and then Screenshot, to see. Watch the video: https://www.youtube.com/watch?v=1NIz94hGNNk |
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