[Q] Screen flicker/dims/blacks out issue - Sprint HTC EVO 4G LTE

Any help much appreciated....I have an issue with my screen flickering, dimming very faint and going black when i touch my screen. sometimes my screen will go black for long periods of time and phone is practically useless. This is not an issue of just a slight flicker on light colored screens that I have read other people describe. The screen does not always do this but is definitely getting more frequent. The flickering/dimming happens when I touch screen and especially when I touch it with more pressure. It also seems to be more sensitive on the bottom half of the screen.
I consider myself as the "scientific type" and have been testing many different scenarios trying to find a rhyme or reason to this happening. The only thing I have found is that if I keep my phone out of my pocket the problem seem to not happen. Then I can put my phone in my pocket for as little as 5 minutes and my screen could be messed up for hours. Everything else about phone seems to work great.
At first I was thinking this was a software issue but now I am leaning towards hardware? I am rooted, unlocked with s-on and cannot send back for warranty. I was running mean Rom for many versions and have also gone back to stock rom and stock kernel and experience same problem. Many reboots and clean installs too. I have also taken phone apart and reconnected all ribbon cables hoping there was a bad connection.
My Evo lte is only 4 months old and has never been dropped nor has it ever been wet. There are no scratches on screen and has been in otter box since the phone was brand new. I am running out of ideas and am I dire need for advice.
Thanks,
Mike

Related

Touchscreen Unresponsiveness?

So I made the jump from Android (Nexus One) to the Radar and I really like it so far!
I do, however, have an issue with the phone that I am wondering if anyone else has noticed.
I have noticed that sometimes when I go to touch a tile(or other UI object)...if I quickly touch it, it seems that the screen doesn't always detect my touch. Sometimes I'll even hit it a couple of times before it responds.
The behavior is inconsistent though. After it smartens up and responds to my touch, then it seems to detect it fine. It's squirrelly and a little disconcerting.
I also think that the region of the screen might have something to do with it. The tile 2nd from the top on the home screen ("messaging" in my case) seems particularly susceptible to this problem.
Has anyone else noticed this? I'm a little paranoid because I bought this phone "new" from someone on CL and when I took it home I realized it was a refurbished model.
I had this problem when I had my 7 Pro. After a while it got worse, as I had to put the phone on standby and then turn it on again to be able to use the screen. I sent it in to HTC for repair, and they swapped the entire front panel with a new one.
Im having the same problem with my sprint arrive I think the problem is related to what is in this thread:
http://forum.xda-developers.com/showthread.php?t=1239238&page=7
but I still cant seem to get it to work

Display turned different colors first all yellow and other looked horrible now BLANK

The phone's been dropped a few times but nothing happened except a few very light scratches.Then I've left it in a bag and found it shattered.
A few months later I was like wtf? when I was watchng a video and all of screen turned yellow.At first I thought it was a film but no.Tried fixing by removing battery but the yellow tint stayed.A few days later it's been soaked in water.Booted once then froze.Had it repaired in phone service.The screen kept changing colours randomly.A few weeks later the screen went black and sometimes very rarely started working again until I turn it off.Now almost impossible to get it display anything.I've never harmed it and I'm having the consequences.I'm about to replace the lcd but I'm asking you if the screen is an issue or what?I've tried reconnecting lcd cable and it didn't help.I've been searching for the screen color issue lots of times and nothing relevant.What causes this?
Code:
TL;DR dropped a few times shattered in bag started changing colors water soaked fixed in service now blank.Im bout to replace lcd.
CAN it be anything else?I don't want to waste money.
blankscreenissue said:
I've never harmed it and I'm having the consequences
Click to expand...
Click to collapse
*cough*
Dropped a number of times & 'soaked in water'. You sure you don't want to reconsider that comment ?
Sounds like the screen, but given the phone's 'history', you're only going to know if you replace the screen. If you're asking people on here to diagnose hardware issues with 100% certainty without having the phone in front of them, you're going to be disappointed (it's impossible). If you don't want to risk forking out money for a screen only to have other problems after you replace it, take it to someone who knows what they're doing to make doubly sure it's just the screen that's damaged/faulty.
P.S - Pro tip: Paragraphing/using some semblance of formatting will make it far more likely people will read your threads. Typing a couple of hundred words in one lump separated only by full stops & question marks will cause a lot of people to simply not bother reading your thread - it's just too hard.

Erratic phantom screen input

So I have had my ZU for almost two weeks now and loving it, however something has started to get on my nerves and I'm afraid I have something wrong with my phone. I know I shouldn't get so nitpicky but I spent heaps of my hard earned student cash on this phone and I want it to be running smoothly!
Anyway, from about day three of having my phone I started noticing erratic screen behaviour like phantom screen input - as though when the screen of any regular phone has water droplets on the screen and the screen goes haywire, however in my case the screen is completely dry? It usually goes away after I lock the screen but it gets rather annoying when I am typing a text and then all of a sudden all these random keys and words start being typed (and not by me!), so I would like to know has anyone encountered this problem?
My phone is stock rom and has not been rooted. I don't have a screen protector nor have I used any other styli other than my fingers.
My phone is bone dry and I live in summery Australia so air humidity can't be a factor. And I'm pretty sure there's no ghosts in my house!
On the current build .136
What should I do? Is this a faulty screen? I have checked other topics regarding this and my issue doesn't involve any lag or latency between from my own keystrokes than to those done by screen.
bellabee said:
So I have had my ZU for almost two weeks now and loving it, however something has started to get on my nerves and I'm afraid I have something wrong with my phone. I know I shouldn't get so nitpicky but I spent heaps of my hard earned student cash on this phone and I want it to be running smoothly!
Anyway, from about day three of having my phone I started noticing erratic screen behaviour like phantom screen input - as though when the screen of any regular phone has water droplets on the screen and the screen goes haywire, however in my case the screen is completely dry? It usually goes away after I lock the screen but it gets rather annoying when I am typing a text and then all of a sudden all these random keys and words start being typed (and not by me!), so I would like to know has anyone encountered this problem?
My phone is stock rom and has not been rooted. I don't have a screen protector nor have I used any other styli other than my fingers.
My phone is bone dry and I live in summery Australia so air humidity can't be a factor. And I'm pretty sure there's no ghosts in my house!
On the current build .136
What should I do? Is this a faulty screen? I have checked other topics regarding this and my issue doesn't involve any lag or latency between from my own keystrokes than to those done by screen.
Click to expand...
Click to collapse
Build 290 and 136 got rid of this problem for most users. Give the screen a good clean
You could also search for a thread by hamdogg (or at least he commented on it) about a edit in the system to lower the touchpanel sensitivity - but will need root.

Flashing/flickering/artifacting screen?

(UPDATE: Here is a link to a short video of my issue: https://youtu.be/YqKW3tU4Fhw)
So I cant seem to find ANY info relating to this issue aside from results for the LG G4, but the solutions for said phone are all over the place. Some are bad screen, some are related to sim tray, some are related to water damage and battery etc. So basically, about a month after buying this phone (KIW-L24 US version), the screen started to artifact and flash in and out randomly. There is nothing that seems to trigger it. I have set the phone down on a table while on the homescreen and watched the lightshow. It is basically a mixture of the problems seen in these videos (Feat. LG G4).
https://youtu.be/gAUkXLR7eQI And https://youtu.be/QstOH66pfiU.
Symptoms:
Screen will randomly start to flicker and fade in and out. I will also get crazy artifacting lines. (Think de-gaussing an old CRT monitor or simillar to what is seen in the second video)
If i see the problems happening, locking the phone and unlocking again will sometimes fix it temporarily. Other times the problem continues after i turn the screen back on.
Sometimes the screen will refuse to come back on. The backlight turns on, and the digitizer responds, but the screen is still black. Making sure the screen really is off, I can come back to the phone a few minutes later and it will turn on. Other times ill have to hard reset the phone (hold power button 10 sec) and it usually brings the screen back to life.
Background:
I bought the phone "used - Like New" from amazon. It came with all the original accessories and even still had the film protector on the back of the phone. I may have noticed these problems after I received the phone, but they really only started to show about a month after purchase.
At first I though it could be software related as I was running CM13 and something could have been corrupted, so i did not just a factory restore, but a full reflash. This didn't solve the issue. Restarting my phone and the reflash did help, but the problem returned. The inability to turn the screen on persists through a reset and I have to wait till the phone boots again to get the screen back. Sometimes takes more than one reboot. This pretty much confirms a hardware issue right? If i put the phone on a black screen, i can see three small fuzzy "dots" in a triangle shape in the top left quadrant. Could the screen have been damaged by whoever owned it before returning it? They are not dead pixels per se, but seems more like areas where the backlight is showing through ever so slightly more. Not visible unless you are on a black screen in a dark room. Ill upload a video showing some of the issues. Any help is appreciated!
im afraid you need a new display brodar...
Seems to be hardware issue. You can visit the nearest service center to get it fixed for few bucks if you don't have warranty.
Yeah that's what i figured, i just needed conformation. I was able to get amazon to take the return even though I was out of the return period. So at least ill be able to get a refund. Ill just pay the extra for a new one this time haha.
One question : Do u have over heat problem with ur phone ?? If u feel ur phone is more than work from the back dont replace . U'll damage the new screen also . Some ppl erported over heat cpu issue with honor ! ;.
KobaltPanther said:
(UPDATE: Here is a link to a short video of my issue:
)
So I cant seem to find ANY info relating to this issue aside from results for the LG G4, but the solutions for said phone are all over the place. Some are bad screen, some are related to sim tray, some are related to water damage and battery etc. So basically, about a month after buying this phone (KIW-L24 US version), the screen started to artifact and flash in and out randomly. There is nothing that seems to trigger it. I have set the phone down on a table while on the homescreen and watched the lightshow. It is basically a mixture of the problems seen in these videos (Feat. LG G4).
And
.
Symptoms:
Screen will randomly start to flicker and fade in and out. I will also get crazy artifacting lines. (Think de-gaussing an old CRT monitor or simillar to what is seen in the second video)
If i see the problems happening, locking the phone and unlocking again will sometimes fix it temporarily. Other times the problem continues after i turn the screen back on.
Sometimes the screen will refuse to come back on. The backlight turns on, and the digitizer responds, but the screen is still black. Making sure the screen really is off, I can come back to the phone a few minutes later and it will turn on. Other times ill have to hard reset the phone (hold power button 10 sec) and it usually brings the screen back to life.
Background:
I bought the phone "used - Like New" from amazon. It came with all the original accessories and even still had the film protector on the back of the phone. I may have noticed these problems after I received the phone, but they really only started to show about a month after purchase.
At first I though it could be software related as I was running CM13 and something could have been corrupted, so i did not just a factory restore, but a full reflash. This didn't solve the issue. Restarting my phone and the reflash did help, but the problem returned. The inability to turn the screen on persists through a reset and I have to wait till the phone boots again to get the screen back. Sometimes takes more than one reboot. This pretty much confirms a hardware issue right? If i put the phone on a black screen, i can see three small fuzzy "dots" in a triangle shape in the top left quadrant. Could the screen have been damaged by whoever owned it before returning it? They are not dead pixels per se, but seems more like areas where the backlight is showing through ever so slightly more. Not visible unless you are on a black screen in a dark room. Ill upload a video showing some of the issues. Any help is appreciated!
Click to expand...
Click to collapse
Try moving to stock once , if it fixed stick to it for few days . 99% of possible cases for hardware issue .
So better request for a replacement from huawei . but don't mention them that u bought it used . tell them u bought it new

For anyone interested, some info about screen flickering issue.

Seems that a lot of people complain about this bug/glitch. It mostly happens with this device, specific to some carrier like s5 t mobile etc. Mostly what people face is flickering with a green/yellow nuance that covers at least half of the screen, and that happens when you set screen brightness on minimum. Some other ( like me ) also get the flickering while turning the screen on or off. So I started doing some searches over the web, and tried all the 'fixes' possible. Sadly to me nothing worked. Some of these 'fixes' are :
Turning off auto brightness.
Turning off adaptive display.
Turning off screen overlay ( found on developer settings )
Also other strange ones like removing your sd card etc. Few people say that these worked for them, but for me it didn't.
I tried booting on safe mode, and the problem was still there. I also flashed official 5.0 and the same. So the only thing left was to blame the hardware. But I was sceptical about this since the problem is not persistive, sometimes it happens, sometimes not. Sometimes it happens on small scale, sometimes it is worse. Also a lot of people say that their devices were working fine and the problem started after marshmallow update. A certain person on an online forum claims that he/ she spoke with samsung officials and they are aware about this problem and working on an update to fix this. Does this mean it is not physical problem but just a software glitch ? Hard to say, I sent my phone to different local repair shop and they say it is screen physical problem. But maybe they just want to scam me and take money ( new screen costs too much )
After going through all these, I just got the idea to try and flash an older firmware, like kitkat. And to my surprise, on official kitkat rom it still does the problem, but FAR less.
So TLDR if you have this glitch and gave up on all the 'fixes' you found online, try flashing kitkat, it might work for you even if it's not a permanent fix.
I'm sorry to bump this topic being that it seems dead. However after my own research and now my second S5 from T-Mobile. I'm at the same point as you. My research states that it's more of an AMOLED screen issue, which after a factory reset and flash of older ROM and such does make sense. However, at the same time it could be an actual issue with the screen.
It's definitely a hardware issue in my case-cold temperatures exacerbate it ie-I have no flicker issues in the summer, but get flicker issues in the winter if my phone cool's down to the 60s. The flicker goes away if I heat the screen.
It seems the lower the temp, the more wattage (brightness) is required for the display matrix to function; insufficient wattage/heat when the screen is activated, and the matrix collapses. This is why it autobrightness tends causes issues when it provides power below threshold for matrix stability.
Easiest legitimate econimical fix is ordering a replacement screen, if you have reaervations about yiur shop doing it, it's a very easy/cheap/simple process to do yourself and plenty of how to YouTube videos.
okay, I will solve this issue for yall. I have an s5 g900t that had the screen flicker issue and also when temps are cold, the screen would blank out till I warmed the screen. I fixed this issue after a year of having the issue. a temp fix which can damage the device was found by accident when I went to change out a broken rear cam. heating the screen with a heat gun during surgery fixed the issue for a while then the symptoms came back. after much much research and testing, I found the amoled screen was the culprit. I ordered a new screen and replaced it. no more issues. I took the old screen and replaced it to my other s5 which is for testing only and the screen flickered under low light and would not come on when cold. so, if you have a screen that is flickering in low light and/or wont come on during cold, its your screen. replace it and fixed. how long the new screen will last? well 2 years later no problems, yet.
FYI, AMOLED screens are notorious for this issue and the manufacture is well aware.

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