Galaxy S4 I9500 Black screen (S view) appears - Galaxy S 4 Q&A, Help & Troubleshooting

When i am playing game or doing other kind of work, S-view (Black screen) appears randomly and in between screen automatically locked.
While playing games screen automatically rotates (Horizontal screen view-----> Turns into Vertical view)
in "nameless rom'' it doesn’t happen
But when we use Samsung original or modified rom it happens again.
Kindly give suggestion for resolve this.

Nilay Patel said:
When i am playing game or doing other kind of work, S-view (Black screen) appears randomly and in between screen automatically locked.
While playing games screen automatically rotates (Horizontal screen view-----> Turns into Vertical view)
in "nameless rom'' it doesn’t happen
But when we use Samsung original or modified rom it happens again.
Kindly give suggestion for resolve this.
Click to expand...
Click to collapse
I have the same problem with my S4, while gaming the black screen and clocks would flash, the game image would flip from landscape to portrait and back to landscape and the game would pause. I also only noticed the problem occured on TW based ROM's and never on CM11 based ROMs - but CM11 is too buggy and bad on battery for my usage.
I took it back to Samsung Service Centre and they replaced the mainboard. 2 days later the problem was back, I took it back and they replaced the screen - they said the magnetic sensor was part of the screen. The next day the problem happened again.
I noticed this mostly happened when I was at work and my signal was on EDGE (my cellular provider signal is bad at work) but never when at home or when I had H or H+. I set my mobile network to WCDMA only and the problem hasn't reappeared since.
Try doing the same and let us know buddy

Try any of this possible solutions.
http://forum.xda-developers.com/showpost.php?p=55490858&postcount=2

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ImAlbyy said:
I changed the display , the touchscreen of my one plus. The screen is a lcd and not amoled but works perfectly. After 3/4 days by using it , it started to give me some problems and the only way to fix it is going on the twrp and go back on the old backup. The duration of the problem is not the same but change. This problem comes up when i try to open an application, unblock the screen or after ending a call. The screen just go off and doesn't turn on again, if it gets restarted it will work again but once i get the pin screen it only show it for 1 second and then the phone just turn off auto.
Click to expand...
Click to collapse
Could be proximity sensor getting blocked. My friend also replaced his screen with an LCD panel. This problem occurs when he calls anyone, so to restored back he uses power button and screen switches on again.

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