I have a 4155 that has developed the following problem: most of the times it doesn't turn on correctly. I press the power button, I see the backlight coming on but the screen stays grey (blank). Eventually I can get it back on, but only after performing a hard reset, then many, many soft resets (anywhere between 10 and 30). Then it works again for a little while, and the whole thing happens again.
The only way to avoid it is to have the screen stay on all the time, i.e. keep it plugged in and have it not turn off while on AC. If I allow the screen to turn off, chances are I'll have to do the whole reset procedure again, and it takes up to 30 minutes each time. It doesn't matter at all how well charged the battery is, and it even does it if I allow the screen to turn off while plugged in.
Of course in its present state it's just a little more than a paperwewight, not a PDA. I know that underneath it works correctly, just the display has this weird bug. I opened it up and poked inside, put it back together - no change. Does anyone have any idea? I'd really, really like to make this work again.
Thanks for any help!
(I should mention that I flashed the ROM once: I got it cheap off eBay because it was the French language version, and I flashed it with the English ROM. Worked like a charm for many months, then it developed the problem above. Don't think it's related to flashing, but thought I'd mention it anyway)
Bump. .
I've had an odd problem with my 820 almost since getting. I'm hoping one of you geniuses have some advice.
When I turn it on it works perfectly, sometimes for hours. Then the screen goes blank, and then random pixels begin to appear, starting at the top of the screen. Outdoors rather than random pixels the screen goes almost totally green. Strangely, if part of the screen is obscured the green only covers rhe exposed area.
Pressing the on button repeatedly usually brings back the lock screen and reset (on+down) fixes the problem for another few hours.
By the way, eventhough I can't see the screen the touch sensor works. For instance I can hold theon button and then swipe downwards to turn off the phone. I can also answer and hang up using earphones.
My daughter who purchased the phone said it worked fine until the amber update. I had hoped the black update would fix the problem but no change. I found some posts from people with the same problem who sent the phone in to be fixed and got it back in the same condition. I really don't want to go through the hassle unless I expect to get it back fixed. I'd rather try fixing it myself.
My question is whether this is a firmware problem an whether it is likely that re-installing the stock black rom would do any more than the ota install that occurred automatically did (or didn't do).
Any ideas?
Nobody?
By the way it seems to happen only, or mostly when in standby.
I installed an app that displays a clock and doesn't allow the phone to go into standby mode,
and the problem doesn't appear to occur (unless I forget to leave the app on top).
I would set the phone to standby = "never" but the option isn't available on my phone, though
I understand that there are those with the standby = "never" option.
Any idea if I can set standby = "never" with keyboard commands, perhaps?
My friend smashed the screen on his nexus 5 and gave it to some shady repair shop. They replaced his screen (with a white one, on a black phone btw, now it has a white dot on top) and he paid a lot of money for it, but now his display won't work, so he gave it to me to fix, as I have some experience with fixing phones and he has no money left. The repair shop refused to take it back and he doesn't want to start a legal battle. As far as I've tested, the phone shows three behaviours. The first is that the phone boots normally, but without displaying anything. I can still hear it getting notifications and can connect it to a computer, it's just not displaying anything. The second behaviour is identical to the first, except instead of a black screen the phone shows colorful static which seems to correspond to screen-on time (when I lock the phone it goes black and vice versa). The third behaviour, which is the weirdest, is that the display works, but everything displayed is glitching. The google logo maybe has the top 20% moved down a bit, the boot animation may be choppy or distorted, the recovery menu may be divided into blocks which are moved around a bit. In this 'mode', I have never gotten it past the boot animation. The reason I wrote 'may' is because it's different every time, but eventually it always just goes black and stops responding until i disconnect and reconnect the battery.
I opened the phone and fiddled with the connectors a bit and found out that pressing the usb board connector to the mainboard seems to cause the phone to switch between these behaviours. I took a small piece of paper, folded it over a few times and put it on top of the connector and then screwed the cover back on to hold the connector firmly in place. That seemed to put the phone into constant behaviour 3 (graphical glitching).
What could be the problem? I know that the static indicates that the usb board or more probably its connector is faulty, but I'm more concerned about the glitching. It seems to me that the graphical processor is malfunctioning, but I have very little knowledge about graphical processing and displaying so I really don't know. Any help would be greatly appreciated.
UPDATE: the phone just did something weird, when I turned it on it displayed static, but then it started drawing the boot animation slowly from top to bottom. And then proceeded with behaviour 3 as usual, the animation ran at about 3fps and just went blank after 10s.
Okay, I have located the exact location of the fault, the USB board ribbon cable that goes over the battery was bent at a sharp angle and then apparently straightened again. If I press it in that point, the screen switches between static and nothing. I have not been able to recreate the glitching since I cleaned all the parts of the phone with isopropyl alcohol. Still, I'm interested in an explanation to avoid further problems with glitching
now it's behaving even more strangely. When I turn it on, it slowly fades from grey to bright white screen and then goes black and starts blinking a red light. What does this mean? Please help
anyone?
Hi guys,
I am experiencing the wierdest thing on my brother's Xperia Z3.
2 days ago, the phone randomly stopped showing images on the screen, but the backlight would still switch on and off as normal when pressing the power button. If the phone is restarted in this state by using key combos, the Sony logo won't even show up. This problem started intermittently, but now it does this for a much longer period. The issue would usually occur after the phone being locked, or if it were being used, the screen would show horrible distortion on the bottom half and become non-responsive until the screen switched off and any attempt to switch it on would be make the phone behave as described earlier.
I used to be able to make the image work by plugging in the USB cable, but this method seems to have stopped working, or at the very least has a really low success rate. I have tried all the soft reset methods: Power+VolUp, yellow button in the sim tray, none of those work for me.
I have just stopped short of reflashing the phone with Flash Tools.
Has anyone had this problem before? It is really confusing me as to whether this is a software or hardware issue.
Any suggestions?
I reflashed the phone using Flash Tools and the phone is still behaving the same way; just the backlight is turning on. Besides that, the phone seems to be making the correct noises and responding to the USB cable. Anyone have any ideas? Could it be the screen itself? I'm worried that it may be the motherboard.
Ok, I found something that works. If I hit the device with my hand on the back or the screen a few times, it seems to bring the phone back. My suspicion is either a loose screen connector or something on the motherboard. I'm not really comfortable with opening the phone up, so this is going to be my go-to solution. Hope this is able to help someone.
My z-flip3 5g has a strange problem. If i close it (by folding the screen closed), then after opening (unfolding) the screen and touching the right side button/fingerprint reader to unlock it, i hear the quiet "click" noise that indicates the phone is unlocked, but the screen stays black. i then have to repeatedly push the lock button on the right to lock the phone again and unlock it again. after several attempts the screen finally turns on. sometimes it will go black a few seconds later and the same issue continues. but other times the screen will stay on and work fine.
i have noticed that if i do not close the phone (folding the screen together) then i do NOT encounter this issue. the phone screen turns on when pushing the right side button (or touching the fingerprint sensor) and everything works fine.
this issue started yesterday, a system update installed yesterday as well, could it be related?
i already restarted many times, booted into recovery mode and wiped the cache. nothing has helped. the only way to avoid the problem is by not closing (folding the screen shut) the phone.
One UI v 5.1
Android 13
Security patch level Feb 1, 2023
fully stock/not rooted
I have same behavior. Did you solve this problem?
Unfortunately no. Did a factory reset, hoping that would help, but the issue persists
Mine has recently started doing the same. Last update was right before this started several weeks ago. I don't have mine set to require fingerprint, it should just turn on after opening. If I open it partway, it will turn on, then turn back off when fully opened.
hi,
i have same problem, it's software problem?
Not completely sure about that. They update this thing so often, it could be coincedence that it started shortly after an update. I want to try blowing out the hinges as I've got some dust under there that I hear when opening the phone. Definitely not a phone to put in your pocket after working in the wood shop!
Digital Dragon said:
Not completely sure about that. They update this thing so often, it could be coincedence that it started shortly after an update. I want to try blowing out the hinges as I've got some dust under there that I hear when opening the phone. Definitely not a phone to put in your pocket after working in the wood shop!
Click to expand...
Click to collapse
and don´t take it to the beach either!
What is also strange is that when I close the phone and open it a few seconds later, there is no issues whatsoever. However, if I leave it closed a few minutes, then when opening it, the problems with the screen staying off happen.
Yes, definitely don't take it to the beach!
@netridah , mine is doing exactly that. Which makes me wonder is it a wake issue, or a mechanical/sensor issue with the hinge.
one more to the bill
I checked the flexes and I warmed up the logic nothing works
I have the same issue: Flip 3 - 5G with OneUI 5.1 - 1 April Patch level
When I open the phone I eventually see for less than one second the lock screen, the goes black and unresponsive.
Then I have to press the button to turn the screen off (even if it is already) and then re-press the button or use the fingerprint to turn it on and it will work (eventually, sometime I have to do it a couple of times).
I already googled it on many forums but no solutions, I've tried to:
Disable the always-on display - no result, at first looked like it did the trick but the day after was having the same issue.
Check all the updates of the system components like always on-on display (settings --> lock screen --> always on display --> info), no help everything is up to date.
Hi,
I have the exact same problem, only difference is that I'm on the z flip 4.
I get the black screen and sometimes when opening or closing the phone the screen can flash in a bright yellow or green color.
I got a motherboard but the problem continued
Next step changing screen is very expensive at the moment
This is driving me crazy - also started the day I updated to OneUI 5.1.
Hoping for a solution soon!
I am also encountering this problem, I went to samsung repair shop 1 month out of warranty, sales person said it is a screen issue and needs to be replaced for 430$. Mine was before the update, i took mine near the pool, got wet maybe, as the alarm for usb charging mentioned unplug it immediately, day after it began randomly dark when phone is openned fully. Zflip 3
Oh just an update, i did some tinkering today, Good lock all updated, disabled clockface, sprayed some contact cleaner on power button, and hinges, fold close and open for a minute or two, fell asleep for 1 hour, and when I woke up, my screen works back to normal, it wakes up when unfolded, no more waiting or hitting the power button several times. hope this stays like this.
piper_indebt said:
Oh just an update, i did some tinkering today, Good lock all updated, disabled clockface, sprayed some contact cleaner on power button, and hinges, fold close and open for a minute or two, fell asleep for 1 hour, and when I woke up, my screen works back to normal, it wakes up when unfolded, no more waiting or hitting the power button several times. hope this stays like this.
Click to expand...
Click to collapse
How to disable the clockface? what would that contact cleaner be?
thanks
firstchris said:
How to disable the clockface? what would that contact cleaner be?
thanks
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Click to collapse
Hi, few days now, I still have occasional blacking out, I've tried putting my phone on safe mode, and this seems to solve the problem. I suspect it may not be hardware fault, but 3rd party software, "good lock" or something else that conflicts wit one ui, that makes the flipping open lag waking up. Contact cleaner used for electrical stuff
Didnt use my z3 for about a week let the battery drain.. then charged it too 100% without turning on the phone.. my phone back to normal now.. hope it works for you guys
Hello,
I am using Z Flip 4 and last night I started having this problem as well. I can confirm 100% that my phone has no hardware nor a history of impact of any sort that's why it's really frustrating having this kind of problem.
Has anyone already found a resolution for this problem?
Z flip 4 here also. Had the same problem with the screen. Took the phone to Samsung and they changed the screen, frame and back panel's for free under warranty.
They said it's a hardware issue.
So better to take the phone to Samsung.