I have yotaphone 2 from tinydeal germany. (I think they flash the ROM to change the language.)
The phone worked fine at first but now the e screen on the back is doing strange things, leaving images of previous pages showing through the current page. This means, for example, on the clock face the clock is faint on a grey background and as the fingers move they leave a black after-image. Pages that should be black look speckled grey. Any suggestions for cause and a fix?
Unfortunately this is how (older) EPD screens work. When updated they somtimes leave a ghost image behind. To eliminate this the screen needs to be flashed white/black/white before redrawing and with the low refresh frequency of EPD this results in a very flickering image. So there is nothing wrong with your screen, this is just how EPD screens work. See also here https://en.wikipedia.org/wiki/Electronic_paper#Disadvantages
Thanks, but this ghosting or layered imaging is much more severe. I know someone else with the same phone where black is black and whilst there is very slight ghosting of things like clock fingers it is nothing like this current phone. The phone was fine when we got it, and the layered/grey imaging has started without me doing anything. I only mentioned flashing of the ROM because Tinydeal have told me that that is what they do to change the language on these phones.
So from the Wikipedia entry and your comments I now assume that the phone should automatically flash black/white between page changes but it isn't doing it.
The ghost images don't appear if you load something like chess or sudoko onto the rear display but appear again as soon as the regular Yotapanel or Yotacover is used.
I have the same problem, but only when the white theme in the Yotahub is turned off (so the dark theme is active) or when I use the Yota Mirror. The ghosting is terrible. When I use the white theme, it looks like it should look. I am not aware of any changes I made to my phone yesterday, but in the afternoon this problem started.
Does someone know how to check if the screen is flashing/refreshing correctly and if not, how to repair this?
Update: when I put a completely black screen on the back, it is spotty. The black is not black, but dark grey, and there are many lighter spots on the screen.
Update 2: the white theme has this problem too, but less visible. The white starts as real white, but because of ghosting becomes slightly grey. With black it is much more noticeable, because black does start as dark grey.
Well this may only turn out to be a temporary fix but I went through the Yotapanel pages repeatedly and very rapidly using the bottom of the page buttons.
I got all sorts of shades of grey and multiple overlying images but then the phone suddenly showed a clear black and white page with clock.
Ringing the phone from another phone produced a clear missed call message on the back of the phone and then after a minute the clear black and white clock page came back. I am leavng the phone without looking at all the othe Yotapanels or the Yotacover for the moment in the hope that something just got out of phase in the software and the phone might now settle down to correct operation again.
I have the same problem. It has started a few days ago and it gets worse every day.
Unfrtunately the problem has returned on my phone although I was able to get back to a black screen with the clock after three page changes using the bottom left arrow. This time a missed call message came up very clearly on the back of the phone but after the missed call message cleared the whole of the back of the phone was speckled grey with a very faint clock image. One question though: is this just the phones from Tinydeal where they have apparently flashed the ROM, or is it all phones?
https://play.google.com/store/apps/details?id=com.lggfc.nookclearscreen
That's the app for Nook ereader to refresh its screen and get rid of ghosting. Works also on Yotaphone.
What always works for me to clear the screen when the ghosting annoys me is to switch to Android on the EPD screen (by holding the circle button and choosing the left option) and switch back right away using the same procedure. This always leaves me with a clean black back.
Thanks Keeper and VirtualL.
Tinydeal asked me to upload a video to demonstrate the fault, and no sooner than they did that the phone started behaving normally again!
So if it goes again the first thing I will try is that page sequence, and if it fails the App.
I have to say that these are really fantastic phones. I think that a lot of original reviewers completely overlooked the basic issue of not being able to see a phone screen in bright sunlight, but that the yotaphone overcomes this problem.
Resolved by switching the back to front screen views a couple of times. Getting the front screen to mirror on the back seems to give that hard black and white interscreen flash that clears previous images.
Lothor said:
Resolved by switching the back to front screen views a couple of times. Getting the front screen to mirror on the back seems to give that hard black and white interscreen flash that clears previous images.
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Click to collapse
I don't know if you already use it but this widget makes it very easy to switch between mirror and back. Just one click on the widget.
http://forum.xda-developers.com/yotaphone-one/development/widget-yota-toolbelt-t3145462
Last week, I got a chinese version (YD206) through GearBest. I had the same problem what you mentioned. (Black was always Grey and was never black and lot of ghosting). Until yesterday, I used to think that's how the e-Ink display works so I was using White theme all the time.
After seeing your post, I tried using Nook cleaner software and it did not help. Then, I removed the screen protector which the phone came with. For the next 1 hour, I did not see any difference. I left it thinking it could be ROM issue.
But, after few hours, I noticed everything became normal. Now, the e-ink screen looks goergeous in BLACK.
VirtuaLeech said:
What always works for me to clear the screen when the ghosting annoys me is to switch to Android on the EPD screen (by holding the circle button and choosing the left option) and switch back right away using the same procedure. This always leaves me with a clean black back.
Click to expand...
Click to collapse
This issue keeps coming back and I am not able to find a guaranteed solution to this.
Like you described, activating and deactivating Yota Mirror in quick succession clears the ghosting and makes the screen BLACK. At other times, it does not work at all.
I even try swapping to different Yota Panels, but it is a hit and miss. Is this issue specific to Chinese version of YD206?
How to solve this issue permanently?
If not possible, is there any known step which I can do to clear the ghosting?
prasathvishnu said:
This issue keeps coming back and I am not able to find a guaranteed solution to this.
Like you described, activating and deactivating Yota Mirror in quick succession clears the ghosting and makes the screen BLACK. At other times, it does not work at all.
I even try swapping to different Yota Panels, but it is a hit and miss. Is this issue specific to Chinese version of YD206?
How to solve this issue permanently?
If not possible, is there any known step which I can do to clear the ghosting?
Click to expand...
Click to collapse
I have the same problem with a GearBest YD206 running Android 4.4.3. Would updating the firmware change anything?
Hey Yotaphone Users!
I finally have a solution for this problem, that I received from the Yota Phone Support:
"If you see that ghosting is amplified, try to do some steps. Try to discharge the phone completely. Then leave it discharged for long periods of time, f.e. overnight. Then charge the phone to 100%."
For me that worked perfectly!
For me the discharge-recharge didn't work at all.
Discharged untill it switched off. Turned it on again untill switched off, untill phone wouldn't start up again. So: battery was flat.
What happened was: EPD turned black. Yohoo! Happy!
But: after one night discharged, i put it on charger again. Screen switched on, and ghosting was immediately back.
Disappointed. Very disappointed.
Anyone has a different solution?
stoerebink said:
For me the discharge-recharge didn't work at all.
Discharged untill it switched off. Turned it on again untill switched off, untill phone wouldn't start up again. So: battery was flat.
What happened was: EPD turned black. Yohoo! Happy!
But: after one night discharged, i put it on charger again. Screen switched on, and ghosting was immediately back.
Disappointed. Very disappointed.
Anyone has a different solution?
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Click to collapse
Sad to hear that.
Did you remove the screen protector from the back side as in the post #14 the user said that after removing the epd screen became normal black again?
Has anyone heard and try heating with hairdryer the EPD screen for 2 minutes (not too hot) to eliminate ghosting?
Related
Hey all,
I've read these forums, and am 90% sure I have a defective Hermes. However, I'm unsure, as these forum posts were just text, and therefore can't really accurately describe the problems being seen. So, I made a YouTube video showing a couple of my issues, especially the screen fading to white. Like I say, I'd just like confirmation, and I'd like this post and video to serve as a help to others who are wondering if they have the same problem. You know what they say, a picture is worth a 1000 words .
Here are more details of my problems, in no particular order:
o The buttons reset after a quick power off and on (not a reset).
o The screen fade problem resets itself after a quick power off and on (not a reset).
o The screen calibration issue (not shown in video) seems to last a little longer sometimes. The issue is that calibration gets a little off. It seems to be by 10-20 pixels, but I can't repeat this as readily as the screen fade.
o This has happened with and without a memory card inserted.
o I've tried two different batteries, with the same results.
o I've tried three different firmwares (original, WM5 update, WM6 Black 2.0).
o The battery quick powerdown issue has only happened to me once (battery drains 10% every minute).
Here's the link to the video. It's only 84 seconds, so take a peek!
http://www.youtube.com/watch?v=zQWqTkoMX_4
Let me (and others) know your thoughts. It'd be appreciated.
PS... about the screen calibration...
FYI, I know about the screen calibration issues some have had wth the Hermes. However, I don't think this is that problem, since I never, ever have to recalibrate my phone. It always corrects itself eventually.
The screen calibration issue (not shown in video) seems to last a little longer sometimes. The issue is that calibration gets a little off. It seems to be by 10-20 pixels, but I can't repeat this as readily as the screen fade.
Click to expand...
Click to collapse
This has been documented HEAVILY in the wiki and the forums so I wont answer that.
The rest seems VERY weird indeed especially the screen going white?!?!
Is it still in warranty because I would so send it to be repaired.
Not seen anything like that on any forum. Are you keeping it somewhere hot or near an e.m. field just before use?
What additional apps have you installed? Do these problems still occur with an "empty" phone (i.e. right after a hard reset before installing third party apps)? If so then that should rule out software and firmware (ROM).
Fade to white issue: hardware problem IMO
Buttons stop working issue: looks like software IMO
Sleuth255 said:
Fade to white issue: hardware problem IMO
Buttons stop working issue: looks like software IMO
Click to expand...
Click to collapse
I agree, the screen going white is similar to when I had my O2 XDA EXEC (HTC Universal) in which whenever I moved the lcd into the mini laptop mode the screen would fade to pure white. When I sent it into PPC Tech they notified me saying in which the lcd cable was damaged itself. Im not sure if thats the case with you necesarily, since it seems the screen goes back to normal after powering the device to standby and back.
The keys are most likely software/rom issues. Perhaps maybe you should reflash to a recent rom and see what happens. Although if that doesnt work I suggest you send in for replacement or warranty. I neeever in the 6 months I had my phone did I ever have problems like the one you've listed.
::EDIT::
I just realized I saw that you tried multiple roms, if thats the case I realllly believe you have a defective phone. It does happen that one in a hundred tend to go bad..
Had similar occurance when mine had gotten damp.
fading screen and hardware buttons
Hi,
I've reported some time ago these issues, they started with LVSW Edition (2007-03-20) and after that Pro - BLACK 2.0, 2.5, 3.0 and still with 3.01.
I don't think is hardware related. i happens in random way. No specific apps or time or connection.
I've had similar issues with the buttons not working on my 8525. It seems to have to do with changing in and out of landscape mode. For example, I'll always have problems if I reset the phone and leave it in landscape mode and I always have to push the keyboard in and pull it back out to get everything working right.
If the buttons DO work, they are usually wrong, like up and down will instead move left to right. Again, pushing in and pulling out the keyboard fixes it for me. I recently upgraded to a new ROM and couldn't say if the problem persists or not.
As for the white screen issue - I'd say it's FUBAR'd.
Last night I was busy using my S4 with it plugged into my PC.
It was resting on a flat hard surface. Nothing abnormal.
I was looking at the screen, not touching the phone and it suddenly turned a greenish tint colour with noisy coloured artifacts on the screen. I could still use the phone, but it looked odd. Everything was still visible at this point, just tinted green and with the artifacts.
I decided to power off the phone, and then power it on again to see what would happen.
Afterwards, the screen failed to turn on... somewhat. It's been doing the following behavior since:
When turning on, screen on black, following by a quick split second flash of the 'Galaxy S4' logo. Then black again. When charging the phone, I can see the battery 'loading' symbol flash too, or when going to download mode, I can see the 'warning' flash. When holding down the power button to force the phone to reboot, I can see the screen flicker too. It appears that I can see some flash when the screen first powers on... but it can't stay powered on(?)
The first time this happened, I could see a 1 pixel line on the top representing the colours of my boot animation, when booting but that only happened a few times. Now it does not.
I have opened the device, and checked the screen cable. Detached it, inspected it for dirt or dust. Gave the connectors a gentle blow with a hair dryer to remove any dust and re-attached to no avail.
I can still access the device via ADB and see it's screen via Android Screen Monitor.
The digitiser is working, as I can touch the phone and control it... it appears to be a problem with the GPU(?) or the LCD?
Can anyone make any recommendations? I really hope I don't have to spend lots of money on fixing this.
Thanks, all!
Shameless self bump. Merry Christmas! Santa threw a nice BRICK of coal (or phone) for me
I don't like to bump, but I am going to have to... sorry
I'm abroad, and Samsung said they can't fix it under warranty while abroad? I'll have to send it back home. Really? Bleh!
Has anyone else had this issue before? Is the problem just the LCD, or could it be something else?
One more bump... Anyone have any idea?
Bump
+1
valsivief said:
+1
Click to expand...
Click to collapse
Are you also having the same issue?
If I get my Samsung looked at by a Samsung repair center overseas (outside my country of warranty) will that void my warranty?
Still haven't got an answer for my issue... so.... bump!
So i've had my Nexus 4 for just over 2 years now. It's stuck by me through thick and thin, i think this might be the end though.
Anyway, so i picked the phone up at around 2 am this morning, it had been working perfectly all day up to this point. So i picked it up, the colours on the screen are a bit weird. I change what's on the screen and the colours remain weird, so i do the standard thing of a reboot to see if that clears it up. This is where the big issue comes in, when the phone turns on again, there's a 1 cm wide black bar on the left side of the screen. Nothing appears to affect it, but sometimes it randomly appears greyer than others.
The rest of the screen has the same weird colours as it did before i restarted, kind of muted, and moving light areas on the screen (like app icons) makes bars of lighter colour move across the screen with them.
If i didn't know that the phone hadn't been dropped i'd be saying that the screen was just broken right now. But i flashed CM12 (was on the latest PA beta) and when the phone was restarting the whole screen flashed working for a split second before going to its broken state again. This hints at the issue being software related, especially given that it initially happened with no physical damage occurring to the phone? When thinking about this, the colour issue reminds me of what happens when you installed CM11 with the wrong kernel and it looks messed up...
Anyway, I think my phone is dead, and i'm posting here in case someone has some genius idea as to what on earth killed my phone.
I'm pretty good at doing stuff with the phone, so can flash and install whatever, hindered only slightly by missing 1 cm of the recovery menu. I would take pictures, but normally i use my phone as a camera and...... If any more info would be useful then please ask!
Thanks for any help, ideas or input in advance!
T
7 days ago I have purchased this new note 3 N900 , the screen today is acting in a weird manner.
Here is what happened, I switched on the phone and then there was only the wallpaper and a dark triangle on the right side of the screen, I rotated screens but the thing remained the same, that is only the background with a dark triangle on the right side of the screen with a little flicker so I had to restart the phone.
Now it's working fine, please suggest should I get this phone replaced, is this some kind of hardware issue.
Also I had purchased a cover for the phone which was actually very hard to remove and I applied a lot of strength on the right side of the screen to get the cover removed, can that have caused the problem.
Also is there any app which I can use to check is there is a problem with the screen or not.
Thank you for your time, please give your valuable suggestion.
I'm running stock android 5.0 the same software that came out of the box.
The screen roughly looked like the image attached below -
Forgot to mention above that earlier I also had this issue where the all apps button on main screen turned to blue while everything was working fine and won't change to normal so I had to restart the phone again in that situation which did fixed that problem.
Would it be possible for someone to clarify that is this some kind of problem cause due to applying excess pressure as the Urban Armor Case I have purchases was really really hard to remove so I had to apply a lot of strength on the right side of the screen, it was so hard to remove that even the official back cover came off with it, can that have caused the issue or is it just a software problem.
Sent from my SM-N900 using Tapatalk
Hi,
My dad has S5 G900F for about 3 years and never really had a problem with it. But now the screen sometimes glitches, bottom half of the screen goes black
when he's in the browser and once he moves the screen it disappears. The upper quarter sometimes duplicates itself, screen splits into 4 parts, other parts duplicate as well,
the phone freezes and then when he reboots it the screen turns into these old TV glitching errors. Once it boots up, it slowly goes down while the upper half is blacked out and his
wallpaper is showing. Photos in links.
Once it's fully rebooted and he gets through the lock screen which freezes for a moment it works just fine.
Do you have any idea what it could be? We're guessing that there could be a motherboard problem but we don't really know. It's an old phone and replacing motherboard would
literally cost more than the phone now so we're just curious.
https://drive.google.com/open?id=1dFpXv-OxwMJVYUaWFDEiLY9zVBAm1VGs
https://drive.google.com/open?id=10lu2kZbiXfpij3CGe4AmuI168_ARM68c
Hiya, guess what, I had exactly the same problem with mine. Ended up replacing the screen... But before I did so, not only did I notice the screen glitching and having "snowstorms" and suddenly rebooting, parts of the screen ended up having black squares (loading animation for instance) which went away soon after but kept coming back. So now I've got a new display (got it about a week ago) everything's been fine until I noticed that black square appearing again (only briefly while the loading animation was displayed when shutting the phone down). So I think it must be a motherboard issue... Hasn't gotten as bad as it used to be though, not having any other problems... I know this isn't exactly helpful, just felt the need to post this.
James160103 said:
Hiya, guess what, I had exactly the same problem with mine. Ended up replacing the screen... But before I did so, not only did I notice the screen glitching and having "snowstorms" and suddenly rebooting, parts of the screen ended up having black squares (loading animation for instance) which went away soon after but kept coming back. So now I've got a new display (got it about a week ago) everything's been fine until I noticed that black square appearing again (only briefly while the loading animation was displayed when shutting the phone down). So I think it must be a motherboard issue... Hasn't gotten as bad as it used to be though, not having any other problems... I know this isn't exactly helpful, just felt the need to post this.
Click to expand...
Click to collapse
It actually helped in knowing that he's not alone who had this issue. It sucks that the motherboard is slowly giving up after 3 years of use but I'll definitely tell him about replacing the screen. It's kinda cheap after years. Although he's looking for an upgrade now. But seriously thank you Hopefully it won't get worse for you.
Update 2 Dec:
The screen no longer works. It just shows TV like error although it works in the background .