The screen does not show subtitles, but can boot, shut down. The on-screen keyboard light is on.
Not the screen is bad, is the screen backlight, or screen power, circuit failure.
Check the phone screen cable and board contact is intact, if the cable contact intact, there is no problem with the backlight, you can certainly be broken screen.
If the phone screen in the display can be vaguely seen in the refresh screen, so you can determine whether your screen is intact.
Do you have a light on your phone screen when you turn on the phone? If not your backlit bad phone screen should still be good, you can start the side to see the screen.
