[q] problem with black screen samsung s4 - Android Q&A, Help & Troubleshooting

Hello guys ,
i have a problem with my samsung S4 gt-i9505 when was the last update of firemwire the problem is with black screen. turning to the black screen automatically sometimes for 10 seconds or 5 (depends) and i have to hold the power button or home button together to come back to the normal one. i did the update to kitkat 4.4.4 and the last firemwire hopefully to solve the problem but still the problem is there. Any suggestions to fix this black screen?
PS: is not the death black screen. When is turn to black screen showing only the clock time on the screen .
Regards
Pizel

djpizel said:
Hello guys ,
i have a problem with my samsung S4 gt-i9505 when was the last update of firemwire the problem is with black screen. turning to the black screen automatically sometimes for 10 seconds or 5 (depends) and i have to hold the power button or home button together to come back to the normal one. i did the update to kitkat 4.4.4 and the last firemwire hopefully to solve the problem but still the problem is there. Any suggestions to fix this black screen?
PS: is not the death black screen. When is turn to black screen showing only the clock time on the screen .
Regards
Pizel
Click to expand...
Click to collapse
Seems like some people have this issue due to cases with magnets in them. Either from that or them magnetizing one of the screws on the back of the phone that makes the phone think you have the S-View type case on and closed. Another thing to try is to go to Settings > My Device > Accessory > check Automatic Unlock.

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Help : Boot time very long !!!

Hello everyone,
I just got my Ultra yesterday, played with it and i'm pleased so far, But then i decided to reboot my phone and here come the issue, it takes forever to boot up !
The power does turn with a backlight but the screen stays black and then nothing ! Not even showing the animation !
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Yogaxl said:
Hello everyone,
I just got my Ultra yesterday, played with it and i'm pleased so far, But then i decided to reboot my phone and here come the issue, it takes forever to boot up !
The power does turn with a backlight but the screen stays black and then nothing ! Not even showing the animation !
I have to power + volume up a few times and then it might works
Also i noticed some annoying issue, when i make a call the screen just goes black ! and in whatsapp if i play a video or an audio file the screen goes black and stop playing if my fingers are near the sensor ! I'm not using any screen protector ...
Please help me , thanks
Model number
C6833
Build number
14.1.B.1.152
Click to expand...
Click to collapse
You might have the same problem, and this is the possible fix.
http://forum.xda-developers.com/showthread.php?t=2461487
nickylou88 said:
You might have the same problem, and this is the possible fix.
http://forum.xda-developers.com/showthread.php?t=2461487
Click to expand...
Click to collapse
Thank you SOOOOO much, this fixed my problem with the fake hang at boot. I remembered having disabled the optimized backlight, i don't even know what this option is supposed to do
Whatsapp audio file problem still there
Phone call black screen issue gone :laugh:

[Q] Samsung galaxy S4 GT-I9505 Problem

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Tyon619 said:
My phone is lg v300s . after i update android pie. My phone have problem
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Click to expand...
Click to collapse
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