The Samsung Galaxy Note 4 is a cellular smartphone that was released in October 2014. The Galaxy Note 4 Model Number is SM-N910, SM-N910A, SM-N910T, SM-N910V, or SM-N910R4 for American variants.
It will most likely need a new screen. Check for any cracks on the LED under the glass. You can also try removing your battery and restarting the phone to see if the picture comes back on!
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