Perform a hard reset on the BlackBerry smartphone
If the issue persists, verify that the battery is charged and working correctly by inserting the battery in another BlackBerry smartphone.
If the battery is working correctly, reload the latest BlackBerry® Device Software.
If still failed...Nothing much can save the device.IF STILL under warranty, send back to telco.
The red notification light-emitting diode (LED) light on the BlackBerry smartphone typically flashes if there is no display on the BlackBerry smartphone.
Credits to BbugMy
Blank or black screen on the BlackBerry smartphone
No image or text appears on the screen of the BlackBerry smartphone.
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