This is likely to be a hardware problem, but maybe someone here came across this phenomenon.
I cracked the display (I wasn't even drunk). So I ordered a replacement display assembly and replaced it.
Right after start-up the phone works all right. After a couple minutes with turned of display the Redmi freezes in its current state. E.g. the charge light stays on post freeze even if you disconnect it. When the display is set to stay on no freezes occure.
Software-wise the phone has run without problems beforehand and now. I use a Redmi 2 Pro HM2014811 running CyanogenMod 13.0.
Has anyone seen something like this?
try to use cm 14.1 with stock kernel, and test LA kernel, if you have freezes in LA kernel you have the 2014819 device problem
Unfortunatly that didn't help.
But hey, I discovered that CM 14.1 is really sweet. So I just ordered a Mi4 which was on sale for dirt cheap. Xiaomi ftw!
Related
Hi,
I own an Oneplus 2 for over a year now, in which I had to replace it's display two times . The first time I ordered a new display+digitizer assembly and replaced it myself, went great and everything worked fine. The second time was a month ago, I ordered the exact same display from the exact same seller on Ebay and did the replacement. I tested the display before assembling the Phone and it worked as it should. But an hour later when the phone was already assembled I discovered that the touch screen was completely unresponsive
After some trial and error I came to this conclusion:
the problem seems to be caused by applying a mild pressure anywhere on the bottom right quarter of the screen
the display does always respond when I hold my finger on it (with or without applying pressure) for about 4 seconds, then it sees my finger and I can swipe around (while still holding it down)
if I try the method above a few times, or let the phone rest on a desk for some time, the problem disappears and the touch screen works fine again.
So far, it looks like a hardware-issue, maybe a faulty screen or I messed something up while replacing it. But it gets weirder:
My OP2 is rooted and at the moment of replacement, it was running Lineage OS 14.1 (nightly, 2017-03-30). And when I wanted to update that to it's newest build, I realized that this whole touch screen problem doesn't exist in the TWRP recovery interface. It worked perfectly fine even when I tried to recreate the problem by applying firm pressures on every spot on the screen. So this made it look more like a software-issue, however the update of Lineage didn't resolve it and even restoring my backup of OxygenOS 3.5.6 didn't help.
I found this XDA-post about having firmware issues for the touchscreen with Android 7, but running their fix did not resolve anything either.
Right now my phone is pretty unusable since having it in my pocket is creating the problem. :crying:
Does anyone have any ideas of what the exact problem could be? Or anyone having similar issues? Why is it that there is no problem at all when booting into recovery (TWRP)?
It looks like loose connections between the display and digitizer.
After all it was a hardware issue. I disambled the phone again and after a lot of trial and error I found that there was something that came in contact with the back of the lcd that must have created a short cicuit or something. I placed a thin sheet of paper on the back of the lcd to prevent this and it all worked again! Still weird though that it didn't happen in TWRP.
Hi eveyone, I have moto g4 plus with good working conditions. I have facing the screen flickering issue (ghost touches) for few months when i was on a stock rom. i dont have any problems when i charge with turbocharger all works fine. it flickers while running on battery. i thought that if i used custom ROM then i wont get this issue bcoz many have told this as a stock rom bug. Then, i have flashed custom rom AEX 4.4 Nougat 7.1.2 b4 a week. after that still problem persists. i have also disassembled and assembled it again each and every parts after cleaning it. but no more fix. but, after i carefully notice it, when the phone is exposed to sunlight or to a open space then the screen flickers every 2 mins. but it doesn't flicker not even 1 time when it is inside a room, home or closed place. it flickers only when in open space or in sunlight.
Please tell me what will be the problem. i have tried service centers he asks me to replace the screen frame, but i dont think so that the problem is with screen bcoz it doesnt flicker not even one time also.
please let me know if you have any fix or where or what will be the root cause of the probelm..
Hello all.
First of all, sorry for my English. After few years of good perfomance, the LG G2 D802 with stock mod started to perfom slowly like a film in slow motion, e.g.. it takes a second to show each character in the screen that i am writing now. In addition, when the display turns locked it is impossible to unlock it without reseting the device.
I tried with a hard reset but the problem didn't solved. The superuser android test for the proximity sensor passed ok (I think). Have you seen this before? Can anybody help me with this?.
Edit. The poperty high temperature off enabled maybe let it run a bit faster but still with long delay. A few times the device starts to work as fast as it was new but this situation is for a little while, an incoming call or similar returns the device to the "lag" mode.
It is amazing, now the phone runs like the first time, seems unbelievable it runs better than ever, after battery charge but I havent done anything special ... So at this point it is a hardware or a software issue?
Android version: 4.4.2.
Kernel: 3.4.0
Soft. D80220h-EUR-XX
Conpilation KOT49I.D80220h
UPDATE: Problem returns as I expected. So I have open the cover and check connections, all seems ok but I left a small piece of paper above the proximity sensor just in case, it dint work.
Ocasionally the screen performs a kind of flickering, e.g for a few seconds I can see the top half of the screen just in the bottom half of the screen... any idea for next step? nobody is using LG G2?.
UPDATE : I have Flashed stock rom lollypop 5.0.2. And it seems that now the unlock problem is solved, but the lag remains,it is crazy, two seconds from push letter until it appears on the screen...
Maybe it seems a hardware issue, now I am considering this steps:
1) Flash kk again 4.4.2 and hard reset. Just in case, but no hope that it works.
2) if it is a hardware issue, it can be a problem with flex cable or display or digitizer or proximity sensor or motherboard or other I don't know or a mix.
3) Hit the mobile against the wall
At this point, Did anybody deal with something similar?
Hello Everyone. What I'm about to write might be a bit tricky and complex, so thank you if you'll follow along.
Unfortunately, I dropped the phone into water couple of weeks ago (I know, how dumb...). I let it dry 3 days in rice and Silica gel. After that, I tried to boot it up and it worked, but after couple of hours the touch screen was not responding anymore. I rebooted it and worked again, but lately failed another time.
I tried to let the phone standing up for 3 days, and it worked again perfectly. But as soon as it lies flat horizontally, the touch screen stops working.
After several attempts, I figured out that there might still be water in it, which reaches the motherboard/top of the phone when it is horizontal and messes up with the screen.
However, just out of curiosity, I tried to change ROM and noticed the following:
1.MIUI Global Official: Phone works perfectly, even after lying horizontally. However, everytime something full screen is running, touch screen stops working.
2.DotOS/Lineage/AICP(unterwelt) (All based on Nougat): Phone works, but touchscreen fails after it lies flat.
3.Factory Kernel/ Voodoo: no differences.
So, do you think the problem is in the Hardware, or Software?
Do you accidentally know any good seller of LCD/Touch-screen replacements?
I'm looking forward to buy a Redmi note 4 (if I find any, since there are very few on the market and there are no redmi 4 prime anymore), so I thought this topic might be an take-off for some interesting discussions/opinions.
If you arrived here, thank you very much for your time and hope you can help me one way or another.
Best,
G.
PS: I tried all possible paths while changing ROM/Kernel (Clean and dirty flash, no/formatting data, reinstall TWRP)
In case might be useful to someone:
I opened the phone, use a hair dryer (cold air, not hot) for couple of minutes and now it's working perfectly.
I recently replaced the screen on my K20 Pro and I noticed that there are a few malfunctions. Screen brightness suddenly goes max for a few seconds when using opening the phone from lock screen and usually when using fingerprint to unlock (I have my Auto-Brightness set to off). Ghost touches when tapping but none when swiping. I was wondering if this is a common malfunction after replacing the screen (calibration or something) or did the installation of the screen went wrong or is it because the LCD used to replace the original one was defective. Thanks for the insights.
i just replaced my screen four days ago and so far i got no problems of some sort..
so, i think it's probably the installation or the unit's fault. idk tho
I'm just annoyed by the sudden screen brightness max. To be honest I think the ghost touch thing is because of a defect LCD, but I think the brightness problem is from the system. It's like the phone does not recognize or remember the previously set brightness. I hope there's a solution for this. Do factory resetting the phone solve any brightness problems?
hello! did you managed to solve this problem? I have the same problem
if you removed foil and it still touch in random parts of screen,. then send it back. i had the same symptoms with a few screens that I repaired. just Chinese quality
yaro666 said:
if you removed foil and it still touch in random parts of screen,. then send it back. i had the same symptoms with a few screens that I repaired. just Chinese quality
Click to expand...
Click to collapse
i did the replacement with not 100% compatible display...because it was way cheaper than the display I needed...(from an oppo phone) i know it sounds weird but the display was 200 dollars( the 100% compatible from oppo) and i payed like 70 for this display that flickers the bringtness..but they told me a factory reset can solve it?
what do you think?
try, but I doubt it. looks like fauly/not compatible to me.
try flashing latest miui to make sure you did everything to get it to work, if that doesn't make it better just don't waste your time. if you have more technical data on both anoled and lcd with connections described (every pin) then you could make research a d bypass if needed. otherwise send it back
vincedrian said:
I recently replaced the screen on my K20 Pro and I noticed that there are a few malfunctions. Screen brightness suddenly goes max for a few seconds when using opening the phone from lock screen and usually when using fingerprint to unlock (I have my Auto-Brightness set to off). Ghost touches when tapping but none when swiping. I was wondering if this is a common malfunction after replacing the screen (calibration or something) or did the installation of the screen went wrong or is it because the LCD used to replace the original one was defective. Thanks for the insights.
Click to expand...
Click to collapse
managed to solve? I have the same problem, besides sometimes the screen seems to lose sensitivity, I saw in some groups people recommend buying parts from the dragon-tt store....I'm thinking of taking a chance....