Database Users

Screensaver?

Is there a way tio get a clock in the screensaver? my just turns totally black.. in my old nokia and SE it was possible to put a clock in there.. i have tried but cant find anything about it.. / Jörgen

It's not a screensaver, that's the screen being turned off to save battery. My guess is that on smaller screens the power drain involved in displaying the clock is quite low as the backlight wasn't on. On the screen on the hero (and pretty much every other colour screen phone brought out in the last 5 years) the screens need to be backlit to show anything and the power drain would be huge.
In short, there might be an application to do it but you are far better off just pressing the on button when you want to see the time.

herman3101 said:
On the screen on the hero (and pretty much every other colour screen phone brought out in the last 5 years) the screens need to be backlit to show anything
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Really? Why is that?

Modern LCDs all have a backlight and the image you see is obtained by filtering this light through individual switchable filters (these make up the pixels). In the past some screens worked by varying how light is reflected from the screen using these filters but these are inferior to modern lcds. We are now seeing a return to non-backlit screens with the new OLED technology but this is still actively lit at the individual pixel level.
If you don't believe me then take apart a laptop or LCD screen and disconnect the power inverter which is responsible to supplying the power to the backlight. The screen will appear to be completely dark unless you shine a very bright light on it and then you will be able to see the image very faintly. Just don't do what I did and snap the inverter, felt very silly.

samsung vibrant pixel marks

There seems to be an issue with the super amoled screen. Its not a biggy as of yet. It seems if you have something on the screen for long periods of time it will wear the pixels out. My example....if you go on a white screen in landscape, the look where the status bar usually is (where it says samssamsun) you can see a fainted image of the status bar and a collage of times, battery and signal (i assume from always changing). U cant really see it and sometimes i wish i couldnt. Small flaws like this upset me. My phone isnt rooted (no screen shots) if you have a vibrant or galaxy s. Could you text and see if this is a product wide issue. Thank you for reading please leave comments.

Don't see that on my phone?

uhh, a screen shot wouldnt show burned out or worn out pixels dude.

So I ran the flashlight application, held up the screen, tried looking at different angles, and couldn't find one anomaly.

You should trade it in for a new one.

did the same thing with the flashlight app, nothing shows up. this dude is on crack.

turbosix said:
did the same thing with the flashlight app, nothing shows up. this dude is on crack.
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Maybe he just has a lemon?

I can attest to this. I see it after just booting up and going from the lock screen to the desktop. I can see the faint outline of the white numbers from the time on the lockscreen on my GenieWidget on my desktop at the top of my homescreen(widget has grey background). It seems to dissappear though.

I have some when using color flashlight I see marks where the time is. It is very light but I see it. Tmobile is replacing it now. Lol
Sent from my Samsung Vibrant

Screen dims in Explorer and mail

My screen dims in programs like mail and explorer when i open them. I have it on high and auto off but it dims whenever i go into these programs. The home screen and everything else stays bright. Is there something i am missing.

I'm talking out my ass, but the only thing that would make sense is that it's a "safety measure" because all white screens kill OLED screens, like what the Focus has.

I called Samsung about this issue the other day and was transfered to level 3 tech support.
I have my settings like you where automatic brightness is turned off and is set to High..
He had a Focus with him and I showed him that when you set the theme to light instead of dark (to see the transition).. The home screen is set to bright white but anywhere that you navigate from there (i.e. the application list).. the screen dims.. making it harder to read text.. He saw what i was referring to and agreed with me on the problem. He thought it was something to do with WP7 but i told him I tested the HTC Surround and it remained bright white on any page (I know its a different kind of screen)
He put me on hold and spoke to a product specialist assigned to the Focus and said that was how the phone was designed.. He passed my concern along with hope that we may see a patch that fixes this.
On a positive note, I asked about the amount of RAM in the phone and the specialist confirmed 512MB.
I hope this answers your question.

Thanks. I hope they fix this. It is hard to read e-mail in any kind of light.

I'm glad for the dimming, personally.. the all white screen would be uncomfortable to look at on the super amoled, imho.

istgradfrompsu said:
I called Samsung about this issue the other On a positive note, I asked about the amount of RAM in the phone and the specialist confirmed 512MB.
I hope this answers your question.
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Thanks, I was trying find that one out.

Noticed the dimming right away as well. I read this on Anandtech's WP7 review:
Microsoft mandates three discrete display brightness settings on all phones: low, medium and high, coupled with an automatic brightness mode.
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To me, it seems like Samsung tried to artificially inflate battery life by programming dimming conditions into the firmware, while still adhering to Microsoft's front-end mandate.

Tried the other two at&t WP7 phones today and they were much much brighter in email/internet explorer. Would a vanilla copy of WP7 theoretically remove this? Since the home screen doesn't dim, it leads me to believe that it's OS level.

is this only when the white theme is active? or is it when dark is applied as well?
this is pretty lame

aphexacid said:
is this only when the white theme is active? or is it when dark is applied as well?
this is pretty lame
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It does it on both.

Just a heads up if you're planning on buying a Focus S (or Focus Flash), they do white-screen dimming as well.

Screen Brightness Issues..

After long consideration I decided 2day finally update my (amazing) Galaxy Tab 7 to the new 7.7. I saw 5 units in hand but they all suffer from a screen issue. Even with Auto-Brightness OFF, when displaying bright images or there are large portions of white, the screen always self-dimms. I tried all possible settings, all units the same.. nothing 2do w/settings or the ambient-light sensor.. its the nature of this Tab. Ad a real-world test I tried displaying a small white square in the center of the screen w/maximum brigtness and as I enlarge the image the whole screen darkens progressively. By the time the image is in full screen (all white) brightness is less than 1/2..
Is this a hardware/ software issue? Has everyone else noticed this? Is there a fix? Its an absurd flaw.. needless to say, Im not buying the 7.7 till there is a remedy for this behaviour..

。。 只是来占沙发 只是来占沙发 只是来占沙发

VeEuzUKY said:
After long consideration I decided 2day finally update my (amazing) Galaxy Tab 7 to the new 7.7. I saw 5 units in hand but they all suffer from a screen issue. Even with Auto-Brightness OFF, when displaying bright images or there are large portions of white, the screen always self-dimms. I tried all possible settings, all units the same.. nothing 2do w/settings or the ambient-light sensor.. its the nature of this Tab. Ad a real-world test I tried displaying a small white square in the center of the screen w/maximum brigtness and as I enlarge the image the whole screen darkens progressively. By the time the image is in full screen (all white) brightness is less than 1/2..
Is this a hardware/ software issue? Has everyone else noticed this? Is there a fix? Its an absurd flaw.. needless to say, Im not buying the 7.7 till there is a remedy for this behaviour..
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Under settings disable automatic screen power adjustment.

EarlZ said:
Under settings disable automatic screen power adjustment.
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Thank you. That makes sense because its under full white that AMOLED screens use more power. Where is that setting? Im used to Gingerbread.. Honeycomb is a mess, I cant find anything I wanna get to
Thanks again

VeEuzUKY said:
Thank you. That makes sense because its under full white that AMOLED screens use more power. Where is that setting? Im used to Gingerbread.. Honeycomb is a mess, I cant find anything I wanna get to
Thanks again
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Settings > Display
Its a tick box I cant recall exactly where it is but I think its like 2-3 options under screen brightness.
Though you have to take note that the white levels on the Tab7.7 are lower than compared to the 8.9, 10.1 and almost all other high-end Galaxy phones.

Should I Switch My S4 for Another One?

I got my S4 last week and it's great. This one doesn't have any lag, or at least not anything that concerns me. However, it does have screen issues, especially with the light adjustment. Sometimes the screen will randomly go full brightness for a second and then go back to normal, I notice this when accessing messaging sometimes. I know it also does this for Instagram, but it is suppose to do that.
Now, sometimes it seems like it does a colorshift. the screen will appear less blue and more yellow. It did this when I was accessing the facebook messenger app once and maybe another one. I might be making this up, but it just seems like the color changes ever so slightly. Also, once in a blue moon when it is adjusting screen brightness, all these vertical black lines appear for a microsecond on certain parts of the screen, it seems like an even distribution of lines. Reminds me of something old game boys might do.
I am very happy with the phone though, and I don't want to switch it if I don't have too. However, if another version might not have these issues, I want to switch ASAP, I only have a week left to swap for a new one. After that, my 14 days are up and they said they would only give me refurbs. :[

Do it.
I'm stuck with a defective screen 16GB because the 32GB did not come in on launch day which was my last day to return.
My only option at this point is to get another 16GB that's refurbished from warranty.
The irony in all this is that I manage the kiosk where I purchased the phone on my personal account.
My employees' phones and demo don't have the same screen issues I have.
Sent from my SAMSUNG-SGH-I337 using xda premium

There is a setting in accessibility that called color adjusment mess with that and see if that helps it
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

I will check out the settings. The events that this glitches happen are rare, but it has only been a week and they have happened numerous times. The auto lighting adjustment sucks, times when it should be bright it's not. Plus the black line stuff that happens sometimes. If all of them experience this I dont want to trade in for another one. I don't want to risk trading my working phone for one that won't work so well.

DuffmasterFresh said:
I will check out the settings. The events that this glitches happen are rare, but it has only been a week and they have happened numerous times. The auto lighting adjustment sucks, times when it should be bright it's not. Plus the black line stuff that happens sometimes. If all of them experience this I dont want to trade in for another one. I don't want to risk trading my working phone for one that won't work so well.
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I would swap it if I were you.. I came from the HTC one because of repeated problems and switched to the s4... I've only had it a few days now but have only experienced some lag (fixed by tweaking settings) and the auto brightness is a little slow to adjust sometimes (I've always though this about all my Samsung devices).. But no color changing or bars appearing.. Just my 2 cents..
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

that is partially due to the type of color meter and ambient light sensor type (should be a 40-something segment black and white unless my info on the sensor specs are off. i believe apple has designed a proprietary multisegment rgb meter for theirs). b/w meters get lumens correct, but not perceived brightness (human eye is not the same as a sensor).
the color changing issue you are having may be due to the display mode being set on auto (start, settings, display mode) and under lighting that the sensor cannot correctly meter for (fluorescent lights flicker at the same hertz as your AC current, and are actually pretty dim and WAY off for color balance, so that SHOULD throw the sensors off continuously, which would lead to auto brightness hunting and inaccurate selection of the 'correct' color mode).
try turning auto brightness off and color mode to professional photo or movie (i use move as its very flat and closer to real colors). there ought to be a way to trick the ambient brightness sensor to sample and average at a faster rate, and ramp up/down more smoothly, but i cant code for android otherwise i would have been working on one.
i work in tv/film industry on the sensor/lighting side btw. if the issue goes away, turn on auto brightness and check it out under NON FLUORESCENT lighting. if its gone, it was probably the display mode changing along with auto brightness.

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Slade8525 said:
that is partially due to the type of color meter and ambient light sensor type (should be a 40-something segment black and white unless my info on the sensor specs are off. i believe apple has designed a proprietary multisegment rgb meter for theirs). b/w meters get lumens correct, but not perceived brightness (human eye is not the same as a sensor).
the color changing issue you are having may be due to the display mode being set on auto (start, settings, display mode) and under lighting that the sensor cannot correctly meter for (fluorescent lights flicker at the same hertz as your AC current, and are actually pretty dim and WAY off for color balance, so that SHOULD throw the sensors off continuously, which would lead to auto brightness hunting and inaccurate selection of the 'correct' color mode).
try turning auto brightness off and color mode to professional photo or movie (i use move as its very flat and closer to real colors). there ought to be a way to trick the ambient brightness sensor to sample and average at a faster rate, and ramp up/down more smoothly, but i cant code for android otherwise i would have been working on one.
i work in tv/film industry on the sensor/lighting side btw. if the issue goes away, turn on auto brightness and check it out under NON FLUORESCENT lighting. if its gone, it was probably the display mode changing along with auto brightness.
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I had no idea the S4 had these options. I guess I am used to my Atrix which didnt do much. I went in and adjusted the settings. The auto screen brightness never really did a good job, I feel that it is way too dim in situations where it should be brighter. I will text your advice the next week and see what happens. If I still get issues, I will return it as I have one week left of my 14 days. Thank you very much for the excellent advice!

DuffmasterFresh said:
I had no idea the S4 had these options. I guess I am used to my Atrix which didnt do much. I went in and adjusted the settings. The auto screen brightness never really did a good job, I feel that it is way too dim in situations where it should be brighter. I will text your advice the next week and see what happens. If I still get issues, I will return it as I have one week left of my 14 days. Thank you very much for the excellent advice!
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no problem; the auto brightness on the GS4 is only slightly better than the Atrix 4G (had one too), and same as the GS3. The color mode thing (which is awesome; closer to real life colors versus waaaay oversaturated screens on most phones. also check power saving settings.
also see this thread
http://forum.xda-developers.com/showthread.php?p=41616076#post41616076

Well, I have not seen those black lines since I turned off auto brightness and turned off the screen automatically doing it's own color adjustments. I will turn these back on to see if I can duplicate the issue. I do feel that I have more lag now, but I could just be paranoid.

OK, when I am using my Facebook Messenger App, sometimes these black lines appear horizontally across the screen on low brightness. However, sometimes they dont. I dont want to call them black lines, but maybe I should say they are ghostly tv lines that are barely noticeable. Ideas?

Could someone explain the defective screen issue?, mine looks great...

The phone works great most of the time and is totally useable, the only issue is that sometimes it does these weird things as I have explained. Tomorrow is the 14 day mark, so I am having a hard time deciding if I should switch for another one just in case, or assume all of this is normal and hope the phone lasts me 2 years.

DuffmasterFresh said:
The phone works great most of the time and is totally useable, the only issue is that sometimes it does these weird things as I have explained. Tomorrow is the 14 day mark, so I am having a hard time deciding if I should switch for another one just in case, or assume all of this is normal and hope the phone lasts me 2 years.
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Could possibly be a GPU issue. Have you had any problems playing heavy duty 3d games?
Sent from my GT-N7100

No problems playing the Iron Man 3 game, everything seems fine.
It seems like any time the keyboard is pulled up, the screen shifts color to something more yellow. all of the keys go from a nice grey to a off grey yellow tint color. During this transition, I can literally see the screen transition as weird lines appear for a fraction of a second, like switching channels on an old TV. I tried recording this on my DSLR 1080P camera but it could not pick up the color change visibly. I might try again. It does this on Google Chrome, Facebook Messenger, Snap Chat even. sometimes it color shifts even when the keyboard is not involved. I have the auto adjustments on the screen off and the color set to Standard Mode.
The ATT store said I am a day out of my 14 day limit and there is nothing they can do. They said I have to talk to warranty and see if they will be nice enough to send me a new one. I dont want a refurb, last time that happened, I went through 4 of them. I talked to ATT support and they said they would extend my 14 days another 3 days but the ATT store said I was out of luck for an exchange for a new phone.

So no one elses screen color shifts to yellow when the keyboard pops up? Mine does this now all the time, mainly in low light. It might do it in all light situations but in sunlight I prolly just can't see it. It's incredibly annoying because the screen itself wacks out every time it does it.