If you own a black Tab S2...

[ember1205]

... I need your help.

I just got a 32GB Black Tab S2 and promptly changed the home and lock screen wallpapers to a pure black image to help with battery draw. After doing this, I noticed an odd behavior with the screen that the Samsung reps at Best Buy said they had never noticed before, and were not sure if it was a hardware issue or not.

If I open up Gallery and view the pure black image, the screen is absolutely, perfectly, completely black.

For the "odd" part, you have to do a couple of things:

- Hold the tablet in portrait mode and lock the screen.
- Power on the screen, but don't unlock it.

You will notice a gradient along the top edge and the upper left and upper right corners will have a touch more "gray" appearance to them than the edge does overall.

- Rotate the tablet 90 degrees counter-clockwise.
- Power on the screen, but don't unlock it.

You will notice EXACTLY the same thing as above (gradient, upper left and upper right corners slightly more "gray"). You will ALSO notice that the lower left corner still has this grayish tone to it and there is a bit of a gradient along the left edge.

Does anyone else's tab act like this? I couldn't care less is this is "normal behavior". But, if it's indicative of something being not right, it's going back.

I ask that you actually test this and tell me how yours acts as opposed to just theorizing whether mine is ok or telling me to just get it replaced.

 

[mdye]

I think it's just an effect for the lock screen. It is visible with any wallpaper that's dark along the edges. If you have the same image set for the regular home screen you'll notice that the gradient goes away. I'm sure it's just TouchWiz.

 

[Soapm]

Could this also be the effects of the AMOLED display? Change it to basic and see if it changes?

 

[ember1205]

I think it's just an effect for the lock screen. It is visible with any wallpaper that's dark along the edges. If you have the same image set for the regular home screen you'll notice that the gradient goes away. I'm sure it's just TouchWiz.

Actually, it does not go away. It is present on the lock screen and the home screen both, but is a bit easier to detect on the lock screen.

Could this also be the effects of the AMOLED display? Change it to basic and see if it changes?

Great idea, but it isn't related to the display setting.

The best way I can describe it is that it's almost like a LCD TV with LED backlighting where you can see the bleed-over along the edge of the panel. But it only does it with "sometimes". Rendering a full-screen, pure black image (the same one as the wallpapers) doesn't do it.

 

[dbrons]

yeah, with respect it sounds like a pretty contrived way to find an error. Sounds to me just a normal artifact caused by locking the screen

 

[ember1205]

yeah, with respect it sounds like a pretty contrived way to find an error. Sounds to me just a normal artifact caused by locking the screen

As already stated, it is NOT confined to the lock screen.

 

[ubelsteiner]

No issue here. I set black screen for lockscreen and wallpaper both (through the Wallpaper menu in system settings) and saw no discoloring/gradient on any screen. I'm not sure if its maybe because I'm using Nova Launcher? Doubt it.

 

[kellyjdrummer]

No issue here. I set black screen for lockscreen and wallpaper both (through the Wallpaper menu in system settings) and saw no discoloring/gradient on any screen. I'm not sure if its maybe because I'm using Nova Launcher? Doubt it.

In the Nova settings in Desktop, go to the bottom to Show Shadow. If it is on, no discoloration will be present.

 

[Derek Danforth]

... I need your help.

I just got a 32GB Black Tab S2 and promptly changed the home and lock screen wallpapers to a pure black image to help with battery draw. After doing this, I noticed an odd behavior with the screen that the Samsung reps at Best Buy said they had never noticed before, and were not sure if it was a hardware issue or not.

If I open up Gallery and view the pure black image, the screen is absolutely, perfectly, completely black.

For the "odd" part, you have to do a couple of things:

- Hold the tablet in portrait mode and lock the screen.
- Power on the screen, but don't unlock it.

You will notice a gradient along the top edge and the upper left and upper right corners will have a touch more "gray" appearance to them than the edge does overall.

- Rotate the tablet 90 degrees counter-clockwise.
- Power on the screen, but don't unlock it.

You will notice EXACTLY the same thing as above (gradient, upper left and upper right corners slightly more "gray"). You will ALSO notice that the lower left corner still has this grayish tone to it and there is a bit of a gradient along the left edge.

Does anyone else's tab act like this? I couldn't care less is this is "normal behavior". But, if it's indicative of something being not right, it's going back.

I ask that you actually test this and tell me how yours acts as opposed to just theorizing whether mine is ok or telling me to just get it replaced.

I got the gold one and the exact same issue made me return it. I thought maybe it was from putting on the stupid bookco bookcover case that takes a little force. I returned it though and got a white one but has the same issue but not as bad. Otherwise the screen is fine so I'm not sure if it is a software issue or not. I'm weird about noticing imperfections on a screen so it bothers me some. Hopefully it goes away.

Posted via my Galaxy Note5

 

[ember1205]

No issue here. I set black screen for lockscreen and wallpaper both (through the Wallpaper menu in system settings) and saw no discoloring/gradient on any screen. I'm not sure if its maybe because I'm using Nova Launcher? Doubt it.

How easily could you switch back to TouchWiz and compare? I'm kind of guessing that TouchWiz is ultimately to blame - I can't come up with any other reason that the all-black image displays perfectly as an image but has color gradient to it when it's used as the desktop background.

 

[kellyjdrummer]

Settings>Applications>Default Applications.