There are a few threads out there that have touched on this issue but none as far as I can see that deal with it directly.
The problem comes when you display a pure black screen in low light conditions. It shows that the AMOLED screen is actually grey / blotchy / cloudy instead of being pure black. Initially I thought mine had fingerprints or smudge marks on it, until I realised they were behind the screen. I guess I might have got a phone with a screen that was replaced, but the amount of people who have also reported a similar issue leads me to believe that it might be a manufacturing default? The blotches / clouds on the screen dont change, but exhibit a random formation as one would expect from a defect. It is also possible to see a very faint outline of light running along 3 edges of the screen.
Naturally this is a situation that doesnt reveal itself very often. But I as I use my phone a lot at night, especially reading ebooks or watching films, you start to notice it more and more where you have large expanses of empty black screen.
What I would like to know is how many people have got screens that exhibit this behaviour and how many of you have sent them in for service or had them replaced?
Is it a common issue and something that is to be expected from this type of screen?
You can test if yours has this problem using 'Screen Test' (its free) from the market place. It cycles through solid colours and patterns every time you touch the screen.
Just do it in bed with all the lights out P), give your eyes a few seconds to adjust and see what your screen looks like displaying pure black.
I'm very interested in everyone's experiences and any input or information you have.
Thanks everyone in advance!
ps: I came from a ZTE blade (OLED) which has a uniformly dark grey background when displaying pure black. I kinda expect this as it is a budget phone (albeit with a better than budget screen), but I didnt expect the SGS2 to be quite as bad.
Use "screen adjuster" from the market and set contrast to -60
i have never seen this black low light screen defect. but i am asking you people if any of you have noticed that ugly blurry shadows which are perfectly visible with low light, on white backgrounds especially. they look like marks above the actual display and make high quality images look like low resolution.. it is annoying as hell..
I have this. Noticed it one night when my phone was switched off and charging.
Sent from my GT-I9100 using XDA App
I also have this, noticed the first evening i used the phone...you can notice this during the screen wake delay, or when in a call if you cover then uncover the proximity sensor...don't know if it's a defect but sure it bugs me, i know many won't notice it and will say they don't have this...i will add that if u look carefully to the screen dimmed at lowest brightness in a low light (buy not dark) environment, like early morning, you'll see some "interferences" behind the image, also the darker/yellower left half screen is still visible in these conditions
These things shouldn't be there in a 500€ phone
Sent from my GT-I9100 using XDA App
Thanks for the feedback already.
@elmerendeiro: I have also noticed some 'interference' lines on my phone from time to time. I did a bit of research and it seems when your phone's brightness is set around 25 - 30% it picks up interference from either the wifi or 3g radio. Notch the brightness either above or below this level and you wont see it anymore.
I agree with you when you say we shouldn't be having these problems on such an expensive phone.
It bugs me too - if it wasnt for this i'd have to say it would be an amazing phone
Might give the Samsung service center a call and see if its something they're aware of and if they are replacing screens with this problem?
I`m very happy with my prime, and apart from the gps it seems to be without faults. But the auto contrast is really annoying. I get why it`s on in powersaving mode, but it is still there, even in performance mode. Is there any way to turn it off? I hope this can be brought to Asus`s attention.
Sent from my Transformer Prime TF201 using xda premium
This might be what you seeing at work. Its a new innovative technology from nvidia implented in tegra3 for further battery savings. They have another feature they added also but can't find the description on it.
" NVIDIA PRISM Display Technology - PRISM (or Pixel Rendering Intensity and Saturation Management) reduces a mobile device’s backlight power while simultaneously enhancing the pixel color to deliver the same visual quality with substantially extended battery life."
I have never had an issue like you describe... anyone else? Is it happening more in bright situations or what?
I don't have anything like this. Do you have auto brightness turned on? Could it be tied to that?
Sent from my Transformer Prime TF201 using Tapatalk
Get out of powersave mode.
I have noticed this too. On several occasions I have noticed the screen getting brighter or dimmer for no reason. I have checked and the Auto Brightness IS off. It doesn't happen all the time but I have noticed it.
I have auto brightness turned off, and I sometimes get this problem while watching certain YouTube videos. I can't think of any specific ones off hand. It's pretty annoying. I always run in balanced mode.
Same problem here.
A really simple way to see that, is set the contrast to the minimal (like when in bed ) and watch any video the luminosity will flicker a lot.
It seems that starting from 25% luminosity this effect is way less visible (even if still here).
Hmm... I've always had auto-brightness off and the display has never changed on its own.
But I usually have the brightness very low, and this may be my inability to notice these kinds of things.
Just did some testing, it's less visible when the brightness is turned up a bit, but still there. But I tried a regular movie, and I didn't notice it, but it was very obvious when watching anime. It happens in every power mode. I guess I can live with it if it's only visible when watching anime though...
Sent from my Transformer Prime TF201 using xda premium
I think you are talking about Tegra 3 DIDIM tecnology
and it can't be disabled on TFP
yeh, I guess that's it. I wish they would implement a way to have it disabled in performance mode at least.
Sent from my Transformer Prime TF201 using xda premium
I wonder if it's hardware related or software/driver related. Hopefully in future rom developers find a way how to disable it because it's really really annoying.
The best way to see it is to turn your brightness all the way down, go into a dark room, and play a YouTube video. You'll definitely see the contrast/brightness changing.
Sent from my ROOTED Transformer Prime
The above describes this issue perfectly. All the resets in the world will not fix it, I'm afraid. This is a "feature" of the Tegra 3 chip to increase battery life. I have been experimenting with this extensively. You will notice this much more when brightness is set low (in my case, below 20% or so). It is especially evident in large white or light grey areas of the screen. You will notice what looks like automatic readjustments of the brightness of these areas. It will appear as though the screen is the automatically increasing and decreasing brightness - and the effect is by no means subtle. Try watching a video where there is a lot of white sky. Have a look at this video:
Search for Youtube Video "St Patrick Swipe" if you wish. Set your brightness at about 10%, with auto brightness off. Ensure you are in Balanced power mode or Performance power mode (the effect is very evident in Powersave mode if you want to try that, but I guess that is to be expected). Switch the video to full screen and go to point 1:53 and watch as the two guys go through the gate and up the hill (until about 2:12). You should see the video darken and lighten noticeable (thanks to the good old grey Irish sky!).
For me, this is a show stopper. It means I cannot watch videos at lower brightness levels, when the effect is more noticeable. It also means that when browsing web pages (which have white backgrounds), I am constantly seeing this contrast readjustment and it is very annoying and distracting. I really wish I was the kind of person who notice this kind of thing, as I'm sure quite a few may not. I am returning this otherwise fantastic tablet because of it.
Yes, I know this is my first post and will probably be deleted (you guys are strict!), but I've been reading about this problem here (there are plenty of threads) and in other forums and just wanted to add my voice.
I noticed this the other day whilst watching this YouTube vid in bed with the brightnes low.
http://www.youtube.com/watch?v=uMm9E8pGZ7M&feature=youtube_gdata_player
It'd be a little better if it was a subtle change, bithgening ad dimmming slowly rather than the abrupt increase/decrease in brightness. It'd be even better if it could be disabled altogether but at least I know it's not a fault with the TP and is in fact a feature.
Thanks for putting my mind at rest everyone, I'll live with the annoyance.
I also really wish this could be disabled. It is very very noticeable when watching anime. Keeps changing from bright and vibrant to dark and dull
Sent from my Transformer Prime TF201 using Tapatalk 2 Beta-5
Just a quick heads-up: In the Acer Iconia A510, also a Tegra3 tablet, this issue does NOT occur.
So it's not a hardware thing and Asus needs to fix this
Could the problem be the proximity of the light sensor near the screen? Maybe it's bleeding light into the sensor.
i myself is having this issue, and i see it constantly cause it affects my eyes alot, my eyes feel like its re adjusting to the dark and brighter setting when it happens so i notice it instantly, i really do wish that it would stop, cause its hurt my eyes at night when the screen gets brighter, i think its affected by whats being displayed on the screen, if something is really too bright, it dims it and if something is too dark it brightens it but for gaming and viewing movies that can get very annoying since movies and gaming changes scene very often.
Sent from my Transformer Prime TF201 using Tapatalk 2
I have the T-Mobile LG V10-When I'm outside and I unlock my phone the screen resolution looks like crap for about 5 seconds. The color black turns kind of Grey and contact pics look like crap so does the wallpaper. After a few seconds it goes back to normal,but it's very annoying. It seems like it's the sunlight cause it only happens outside. Anyone else have problems like this?
That's "sun mode." The phone increases screen gamma to make it visible in direct sunlight. It's by design. If you don't like it, cover the light sensor.
siraltus said:
That's "sun mode." The phone increases screen gamma to make it visible in direct sunlight. It's by design. If you don't like it, cover the light sensor.
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Thanks for the help, I thought maybe something was wrong with the phone.
I (and at least one other person) have experienced what seems to be screen brightness or color temperature shifting/flickering that's visible on predominantly white or bright pages/screens. It's extremely subtle, but noticeable. For my phone, it seems not to occur at 100% brightness, but I typically keep it around 70%, and it's much more visible then.
Is anyone else experiencing something similar? You can go to a site or settings screen on the phone that's mostly white background, browse Twitter, Google Now, etc., and look closely at the white space and see if it seems to shift around to you.
Cheers all.
The screen is too bright for me at night. I sleep watching streams movies or youtube on the tablet but its always been too bright even on the lowest settings. Does anyone have any ideas of what I could do to lower the brightness further?
Do you have Eye Comfort turned on? Eye Comfort works well for me (although it doesn't really dim the screen). If Eye Comfort doesn't work, there are all kinds of apps in the Play Store for that purpose (none that I think work as well as Eye Comfort).
Ive never turned eye comfort off. I honestly dont even notice a difference between it on or off.
Screen filter is a good app, easy accessible with use of a widget. I've been using it for many years to get a darker screen at bed time.