Cubot Note S - Vertical white lines on the Screen (software error) - Android Q&A, Help & Troubleshooting

Hi, I bought new "Cubot Note S", what I discovered in the first use was "display whitish" lines lying vertically, when set to high brightness.
At first, I thought it was hardware problem, but later I observed, actually those white(ish) lines are present when:
- screen brightness is higher than about 70%
- and when display is showing darker colors (mainly for notification bar)
- or when using camera.
And also, when moving notification bar up and down, those "whitish" lines moves sideways!
I found one solution for this problem, with the help of "MiraVision" user mode settings, by altering "Color temperature, brightness, and contrast".
You can see the problem and solution in the VIDEO.
youtu.be/rVo6UCAJ96U
Questions:
1) Is it really software error, or hardware problem?
2) If it is a software problem, is there any stable custom rom for "Cubot Note S" ?
Thanks!

maqsudbek94 said:
Hi, I bought new "Cubot Note S", what I discovered in the first use was "display whitish" lines lying vertically, when set to high brightness.
At first, I thought it was hardware problem, but later I observed, actually those white(ish) lines are present when:
- screen brightness is higher than about 70%
- and when display is showing darker colors (mainly for notification bar)
- or when using camera.
And also, when moving notification bar up and down, those "whitish" lines moves sideways!
I found one solution for this problem, with the help of "MiraVision" user mode settings, by altering "Color temperature, brightness, and contrast".
You can see the problem and solution in the VIDEO.
youtu.be/rVo6UCAJ96U
Questions:
1) Is it really software error, or hardware problem?
2) If it is a software problem, is there any stable custom rom for "Cubot Note S" ?
Thanks!
Click to expand...
Click to collapse
Send the phone back to where you got it for a refund.

Many traits with the cubot note s include -
Doesn't boot up and hangs.
Boots up and the sim icon is missing.
Screen burn.
Boots up and sdcard missing.
Problems connecting to wifi.
The ota updater is dangerous and should never be used.
It has a couple of malware apps in system.
Volume button not working as it should.
There are also lots of pro's of course so it is worth £50, but only £50, no more than this.

Related

[Q] Screen flickering related to "energy saving" option

Dear all!
I am really in despair
I notice a strange phenomenon on my Galaxy S 3 (German version).
Sometimes there occurrs a flickering of the screen. It is caused by thin greyish horizontal lines which jitter with high frequency at some parts of the screen. You should not imagine it as some blinking of the whole screen. It's only a partial jittering of thin greyish lines.
It does appear at random, I cannot force this effect to occurr. Most of the times it's subtle, but sometimes it is clearly visible.
I read in some other threads that people noticed flickering in dependence of the power saving options. This I observed as well. But I don't know why. Unfortunately, none of the other threads came to a conclusion. And the problem seems to affect only very few devices.
My S3 was sent into repair twice. Two times the touch screen was exchanged. Last time they also changed "some electrical and mechanical parts". However, the flickering still occurrs.
I now tested for a while and made the following observations:
- it's not related to 3g, wifi or mobile connections in general (occurred while switched off)
- it's not related to "automatic brightness control" (occurred with manually set brightness, 1/3)
- it's not due to the display (they changed it two times)
- it's not related to ambient light (happened both with artificial light and in darkness)
- it's not related to the setting "adjust display color"
- neon light helps to trigger it, as well as switching the screen on or manually changing the brightness
- it's not related to any one of the single settings in "energy saving mode"
- flickering "survives" switching the screen off for a short time
- switching "energy saving" off always finishes the flickering
Can anyone shed light on the reasons for this?
Try unticking the second option in Power Saving mode, which is supposed to lower the FPS in order to preserve power. You can still user PS mode but the flickering should be gone.
iridaki said:
Try unticking the second option in Power Saving mode, which is supposed to lower the FPS in order to preserve power. You can still user PS mode but the flickering should be gone.
Click to expand...
Click to collapse
thank you!
i already unticked all single options there. didn't change it. the only solution is to switch the whole "enrgy saving mode" off as it seems.
paddybear79 said:
thank you!
i already unticked all single options there. didn't change it. the only solution is to switch the whole "enrgy saving mode" off as it seems.
Click to expand...
Click to collapse
I am sorry, I did not read the OP carefully enough, where you stated that
it's not related to any one of the single settings in "energy saving mode"
Click to expand...
Click to collapse
I am using PS mode with all the options checked all the time, I don't think I have ever disabled it, and I haven't noticed the issue you mention. Can you tell us more about root status/ROM/kernel on your device etc? Also, have you tried disabling PS mode and observing the phone for 24 hours or so, to see if it still does the flickering at some point?
I'm having same issue. As for the conditions my result is that it would only appear after wake up when power saving is on with lowest brightness. Also it's not noticeable on dark wallpapers. Any ideas other than "turn off" power saving mode?
Just to add, I'm running stock 4.1.2 version which didn't fix this problem and I was observing phone without PS for a few days without any flicker of this kind.

Whatsapp convo "stuck" underneath the display

I know the title sounds crazy, so let me explain.
I've had this issue for quite a long time now but never gotten into it.
Basically, when I open a white image or whatever light colored app/background, I can recognize a Whatsapp conversation in transparency, almost like it's stuck underneath the display.
So I tried opening the recovery to clear cache and I noticed the same exact thing when the recovery was loading (light blue background).
You can find a picture below. The top portion is my phone's display while the bottom is a screenshot found on Google (cause I needed the old layout for Whatsapp chats).
By the way, the phone I'm having trouble with is a Samsung Galaxy S6 Edge updated to Android 7.0 (the update didn't fix the issue).
Thanks to everyone in advance
This is known as image retention or burn-in. It is a characteristic of OLED/AMOLED displays when the same images are held at high brightness/intensities for long periods of time. There are apps/tools/methods which claim to reduce, remove or in some way fix the problem but please do your research as there is a good chance they can make the problem worse or introduce new problems. I have not investigated further other than methods of prevention. Also, organic light emitting diodes/pixels have a given lifespan. The screen will lose brightness and color accuracy over time. Blue diodes will fade first, then green, then red.

Screen split into four parts! Upper two similar bottom has horrible static!

I recently unlocked my phone to find that the screen split into 4. horrible static and bottom half looked completely ruined. The touch was working as expected only the display was split into four parts. I had to figure out where each option would be and switch my phone off. Problem goes away on restart. occurred twice.
Recently updated to nougat.... But mostly it can't be a problem with the update cause I found someone on another forum who has the similar problem a year ago and I quote his description, - - - - - " just experienced my first issue with mine. I pressed the home button to light the display to check the time, the display was corrupt! I didn't have anything to take a photo of it but I'll explain it to the best I can. The display was split into 4 sections, each section was showing what the lockscreen should show usually. But the lower 2 sections had a lot of distortion, like old static tv's. This bled up into the upper 2 sections as well. I went to snap a photo but the display went off before I could. Did the same again and it was back to normal."-----
1 year ago I had encoutered this bug for the first time. The second time it appeared I recorded it here:
https://www.youtube.com/watch?v=UFK_hT80Re8
What caused such a strange bug?
Disable AOD
I noticed on the S6 Edge if you enable AOD (from the s7 firmware) it'll glitch like that, my advice would be to disable AOD.

Green Display Problem

Sometimes when turning on my Display it looks green and with horizontal lines all over it. Screenshot doesn't capture it. It has been like that for a while but just got way more frequent. A reboot fixed it and i noticed now sometimes also just trying again to turn on the display sometimes fixes it as well as charging it while doing so.
Since it got more frequent theres also this high pitch sound when i turn on the display and the green distortion happens. I have no energy saving mode enabled. Anything i can do or do i need a new phone/ display if it stays like this?
It's a known issue I guess try to keep the brightness high, it happened to me some months ago but for some reason it's gone now. If you need to lower your brightness (ex at night) use some sort of app (like twilight) which actually puts a layer on the display (the screenshots are darker)

Increasing what the Maximum Brightness Level is

Good Day Everyone,
I have early stage Age-related macular degeneration. Right now, it is in the early stage, but I'm running into an issue with my OnePlus Nord N10 5G.
The center field of my eyesight is getting darker. For example of your phone is at the maximum brightness level, it would appears around something like 60% brightness to me.
So see a beautiful photo of an evening skyline, but I see a post sunset view. It's still there, I just see it darker.
Anyway, I really need to make my screen brighter then the factory set maximum level. Yes, I know that will effect my battery life l, but I simply need it.
The Google Store does have some Apps that "claim" that to do that, but the reviews always are always very mixed. Alot of the reviewers saying they don't work and they believe the app developers just want access to their phone data.
I have already gone to the "accessibility" section of "Settings". "High Contrast" and "Color Correction" have helped some, but not enough.
So after all that, my question is, dose anyone know of an app for the OnePlus Nord N10 5G that can legitimately increase the maximum screen brightness? In the alternative dose anyone know how trick the Android 11 (Red Velvet Cake) into increasing what the maximum brightness level is set at?
Jeff B
Hey @ARTEST4ECHO,
You maybe encountering the screen brightness/dimming problem that the OnePlus Nord N10 5G has. If you have noticed that occasionally the screen seems dimmer than usual, but the brightness control is turned all the way up then this might be the problem.
Unfortunately this is a super common issue with this phone. I'm very surprised no one else has replied yet. The Forum on Oneplus's website there is multiple threads about this issue with hundreds of people complaining. Unfortunately it seems that OnePlus either refuses or is unable to fix the issue!
There is one "workaround" that I have found that seems to work. At first it seemed to work every time but lately it's hit or miss. Which is very strange though because I never update my device, so I'm not sure why it used to work all the time and now it doesn't.
Here is that solution that someone posted on the OnePlus website forum. (Again it used to work every time until lately so your mileage may vary. Unfortunately this seems to be the only option that helps/resolves the issue temporarily, besides rebooting the phone. Oh in case you did not know if you turn the phone off and back on the issue goes away until it happens again... )
Temporary Fix How To:
How to temporarily readjust screen brightness when dimming issue occurs:
1. Swipe down from the top of the screen to bring up the notification bar and turn on automatic ambient lighting (the small sun icon with the letter "A" next to the brightness slider)
2. After turning on automatic ambient lighting, manually slide the brightness control up. (increase the brightness - it will still be low brightness even after doing that)
3. Then finally power down the phone screen and power it back up. (just short press the power button to power off the screen, then press it again to turn the screen back on)
4. The screen brightness should be back to normal. Then be sure to "disable" ambient brightness as mentioned in the first step.
Hopefully this solution will work for you. Unfortunately if it doesn't there's no other method that I'm aware of to resolve the issue. I've had the phone for now going on 2 years and have been searching for a solution to this problem ever since.

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