Database Info

Screen Flickering

I've read a few threads on the screen Flickering and there doesn't seem to be any resolution .
I'm on my 3rd tablet now (thanks best buy accident damage warranty!) And this one is flickering worse lately than ever. I updated to the latest firmware, yesterday only to boot up to horrible bouts of flickering during the setup screens.
The odd thing is, there seem to be no consistency to it. Some days it's so had I can't even use the thing, other days it doesn't happen at all. I use the tablet every day for notes or PDF viewing. I've used it with no magnetic cover (totally naked) and with the cover.. doesn't seem to change the occurrences.
I've turned overlays on/off force gpu render on/off.. nothing seems to fix it. Sometimes changing the overlay will reduce the flickering other times it doesn't affect it at all.
I hate to say it, but if I can't resolve it, I'm going to be forced to move to the surface 3.
I'm an electrical engineer and I've done as much trouble shooting as I can think to do.. but I've come up empty handed.
Anyone else have these problems? Has anyone found a definitive fix?

I sent mine back 3 times. The first was a reset. Thanks for wasting my time. The second was a motherboard and that didn’t do it. The third time they did a motherboard, digitizer, and usb port. It's finally stable and back to normal. After 5 trips back, the BB warranty triggers a new unit. Check if it triggers a refund.

I get it occasionally, so far I'm able to resolve it by booting into custom recovery (TWRP) and clearing dalvic to allow all apps to rebuild. Sometimes this resolves it for a few days, sometimes a couple of weeks. Its a repeatable "fix" that makes me question if the issue is related to memory or trim or something like that. Kind of reminds me of how with the first generation nexus 7s one would see slow downs after a while and filing storage with fake data then deleting it would improve performance for a while.

I'm definitely not a tender user of the device. I go back and forth between multiple ROM's and kernels on a daily basis testing what is testable, and unfortunately also what is not. Anyway, even though mine was bought as refurbished on eBay, I have never had any issues like the ones you describe. More specifically, I have never had any issues what-so-ever, that was not created due to my own ignorance. To me the device seems indestructible.
Besides, I would hate to be in the place of my device, or I would definitely have turned schizophrenic. Should I feel bad about pushing it through all this?

Because we're trying to figure out if it's related to a specific device type, which one do you have? P900, 905, 907A or another?

ShadowLea said:
Because we're trying to figure out if it's related to a specific device type, which one do you have? P900, 905, 907A or another?
Click to expand...
Click to collapse
P900 wifi. Us version bought at best buy.
Today the tablet has been rock solid, I have literally done nothing between when it was flickering like mad and now.
I wonder if it might be related to some kid of data transfer. either over wifi, or when data is written or read from storage or SD card. I've take then SD card out to eliminate that as the problem.

Mine was P900 from BB

Issue lies with the screen.
This happened with me I sent it back to Samsung, 3 times. They seem to have finally got it right. They replaced the battery and then the display screen. Now it appears to be working I will let you know after a month if it is still good. They also told me that they will not replace the device even though I bought it and the issue was right from the start. Not even 6 months old. When working the device is excellent.

Ah, so now we know for sure the battery is replaceable. That's good news. Maybe someday our batteries will no longer hold a charge and we can replace it. Now for a good video on tear down and what tools to use to do that and where to get a replacement battery. I know it's early for most of us but someday......we will have to replace that battery. I'm one of those that keep my toys (computers/laptops/tablets/phones,) for many years.

Mine is running like new since last service. Getting the BB Geek Squad warranty has paid for itself already. I get 2 years on anything over $500.

Mine is a p900. I purchased from samsung website. Mine has been doing it fresh out of box. So bummed.

Ive had my 12.2 since march and it recently started flickering. It seems to tuen of the screen for a millisecond especially when lots of refreshes happen. Like scrolling a pdf. A few days back it was bad. Now it has gotten better and I havent noticed anything.

{Diemex} said:
Ive had my 12.2 since march and it recently started flickering. It seems to tuen of the screen for a millisecond especially when lots of refreshes happen. Like scrolling a pdf. A few days back it was bad. Now it has gotten better and I havent noticed anything.
Click to expand...
Click to collapse
My P900 has just begun flickering exactly as you describe. So I should just be patient and hope it goes away by itself?

I'm flickering again. Turning the screen brighter is what triggers it for me. Returning to stock just to get it back and have it flicker again to hit the magic 5 returns may be what I have to do.

https://youtu.be/CvxbVft69Kg
I just followed this guide. Its been a week now, not had any flickering since I did it.

Manya3084 said:
I just followed this guide. Its been a week now, not had any flickering since I did it.
Click to expand...
Click to collapse
Lifting the motherboard only temporary close the gaps of cracked battery connector. The permanent fix need to do: re solder the battery connector.
Look closely under magnified glass or microscope , you'll see the cracked solders. You can test by pushing the connector slightly, a bad one will move easily or lift off from its solder joints.
This video was removed from the poster after I pointed out his guessing solution. Flickering screen has nothing to do with LCD connector on the motherboard.
Lifting mother board actually you're applying pressure on the battery connector from rear cover.

I have had my P900 sent to Samsung service twice without having the screen flicker fixed. I thought this was a known problem and that Samsung themselves should be aware of it? Maybe I should supply some XDA links next time...
Skickat från min SM-P900 via Tapatalk

bluebirch said:
I have had my P900 sent to Samsung service twice without having the screen flicker fixed. I thought this was a known problem and that Samsung themselves should be aware of it? Maybe I should supply some XDA links next time...
Skickat från min SM-P900 via Tapatalk
Click to expand...
Click to collapse
Depend on where you send for service, they know how to fix it now. Service Centers actually are contractors provide services for Samsung and others, the fact that most people don't know.
http://forum.xda-developers.com/showpost.php?p=59573206&postcount=100
It Works. Battery connector replaced. Smoooooth
After 2 visits to Samsung , my unit finally works fine.
Motherboard and LCD were changed first time. But issue persisted.
Second time, battery connector was replaced. Since then it has worked very very smoothly.

Beut said:
Depend on where you send for service, they know how to fix it now. Service Centers actually are contractors provide services for Samsung and others, the fact that most people don't know.
http://forum.xda-developers.com/showpost.php?p=59573206&postcount=100
It Works. Battery connector replaced. Smoooooth
After 2 visits to Samsung , my unit finally works fine.
Motherboard and LCD were changed first time. But issue persisted.
Second time, battery connector was replaced. Since then it has worked very very smoothly.
Click to expand...
Click to collapse
Thanks, missed that other thread. Next time, I'll send them an en explicit request to replace the battery comnector, and refer to those two threads.
Stefan
Tapatalked on some kind of Samsung tablet

[Q] Warning: Camera Failed. Can anyone fix it?

I am having a huge problem with the main camera on my Sprint Samsung S5. Every time I try to use it, I get the notification "Warning: Camera failed." It was purchased on the release date (I think 4/11/2014). It was a known issue for Verizon and I think Sprint phones for this to happen but mine is having this problem 10 months later. I have cleared the cache, cleared data, wiped cache and dalvik, done a factory reset, installed MOAR 6.0, CM12, MOAR 2.2, removed SD card after having flashed a new rom (so no other apps could prevent the main camera from working), disabled the Samsung camera app and tried using Google Camera, and nothing has worked. Today I went to a cell phone repair store and the technician said he tried three main camera sensors and two front facing camera sensors (just to allegedly rule out a hardware issue) and could not get any of them to work. The front facing camera works in Google Hangouts but nothing seems to get the back camera to work. I don't even recall dropping my phone and there's not a scratch on it but one day the main camera decided not to work. It wasn't even after flashing a new rom. Does anyone have any ideas?
Thanks,
Richard

Samsung warranty
We received a service bulletin a while back about this specific issue and its a hardware problem . So your best bet is sending in to Samsung or depending on your carrier you can call carrier and they will swap it out for you.

Thanks for your reply Dhulqarnain. I have rooted the phone and tripped Knox so I can't send it back to Samsung and Sprint is requiring me to sign up for their protection plan (I think through Assurion) to take care of this even though it seems like it's a known issue. Do you have any other suggestions?
Thanks,
Richard

Same problem...inexpensive solution
I've had my sprint s5 for nearly 2 years now, and I recently started having the same exact issue. After extensive research I'm afraid that I must confirm it is a hardware issue. I'm in the same boat as far as knox, my friend...and that leaves repair as our only option. The good news is that it supposedly isn't too difficult to replace, it actually connects like a laptop keyboard, or an ipod hard drive connects (a ribbon type connector). It probably will be a ***** to get it connected, but the even better news is that eBay has our s5 camera from a few dozen sellers ranging from $6 to $15. :good:

Thanks Gmoney1234. I took the phone to a cell repair shop and they tried six different main camera sensors and two different front facing camera sensors and could not get it to work. So that means there's something else going on with it.

Samsung Galaxy S7 Fix Suggestions - Possible Firmware Issue?

Hi All,
I am wondering if you can help me troubleshoot my Samsung Galaxy S7. I am open to any suggestion, even installing non-stock firmware or any other ideas you may have.
I bought the phone (on contract) around 5 months ago, For nearly 3 months now the phone has been freezing 5 - 6 times a day, restarting 2 or 3 times a day. It works for a little while, maybe a week after a factory reset. So my brain is telling me its a software issue as a hardware issue would surely be there from the first minute it reinstalls?
There is nothing obvious as to when it freezes, mostly when loading an app, So I imagine some corrupt kernel call. I would have thought a factory reset would have fixed this though but I guess its just reinstalling the same software and if this is corrupt.
Anyway, my provider in the UK or Samsung are not providing me with any suitable options other than we will "repair" it but will not RMA it and you will be without a phone for 2 months or so. well, this is just not good enough to me as when you pay £600 for a device (which even though I havnt paid as of yet, I am contracted to pay) You dont expect it to break after 2 months. Legally all they have to do is offer a "repair". I just know this is going to be more pain than its worth.
If anyone can help me at all with any possible solution, third party firmware to try and what steps I would need. I would appreciate any help.
Phone: Samsung Galaxy S7 32GB
Model: SM-G930F
Android: 6.0.1
Kernel: 3.18.14-9113173

I don't know buddy, I would wipe the phone clean, install the newest nougat beta and maybe install only a bunch of apps a day and see when you start having problems, maybe one of them is the cause. But that honestly sounds like a hardware issue. I hope this somewhat helps. Good luck

Same problem here. Its a faulty battery and/or power circuity. There is no software fix for that. Thats why it hangs or reboots while opening apps - that needs more amps to be drawn from the battery. Like loading thumbnails in gallery and so on.

TasEsmuEs said:
Same problem here. Its a faulty battery and/or power circuity. There is no software fix for that. Thats why it hangs or reboots while opening apps - that needs more amps to be drawn from the battery. Like loading thumbnails in gallery and so on.
Click to expand...
Click to collapse
Thanks for both replies.
I have tried to reset, still happening, cant install nougat as it freezes as soon as odin recognises it.
I guess I have no choice but to send it to them, I just know I will have problems now for months.

OTG and Gear VR stopped working!

Suddenly OTG and Gear VR are not working on my S8 plus. no water, drop or anything. I have the device for only 2 weeks. No OTG device works (tried with genuine type c to usb adapter). It used to work like two days ago. I did factory reset and reinstalled firmware using smart switch. In addition, Gear VR is not being recognised anymore. PC connection and data transfer using the cable work ok. I believe OTG uses different pins. May it be a hardware issue? I remember getting some high-powered device connected before it stops working at all (using just a simple mouse). I tried everything.
I saw that a number of people have the issue on samsung support website. I hope it is not a known issue and samsung just does not state it officially (like the S7 edge pink line).
Please help or let me know if you have the issue too.

Arismfg said:
Please help or let me know if you have the issue too.
Click to expand...
Click to collapse
Lengthy discussion here > https://forum.xda-developers.com/galaxy-s8/help/usb-otg-longer-galaxy-s8-t3640216

cam30era said:
Lengthy discussion here > https://forum.xda-developers.com/galaxy-s8/help/usb-otg-longer-galaxy-s8-t3640216
Click to expand...
Click to collapse
thank you for your reply. I have already checked the thread above. However, no working solution. Is there anyone who managed to figure out if it is a software or hardware issue? I wonder why it is stated as solved. I dont think the guy with the issue fixed it

I contacted oculus support about this issue. Seems to be a widespread software issue that happens with certain models+updates but they aren't doing anything to fix it for unlocked phones as only phones locked to a carrier are supported by gear vr.

povotron said:
I contacted oculus support about this issue. Seems to be a widespread software issue that happens with certain models+updates but they aren't doing anything to fix it for unlocked phones as only phones locked to a carrier are supported by gear vr.
Click to expand...
Click to collapse
Thanks for the reply. Does this also have to do with OTG devices not recognised? Do you have this issue too? What is strange is that Gear VR used to work. At least for a while on my unlocked S8 plus. I cannot understand how this may block the OTG devices. Is there something left in the settings that may block OTG?
By the way, I hope you are not referring to the network issue. My Gear VR is not recognised at all.

I'm having the same problem as you. I hadn't tried otg before the VR wasn't recognised but I can't use it now. Could be my adaptor though. People seem to have the issue appear following phone updates

povotron said:
I'm having the same problem as you. I hadn't tried otg before the VR wasn't recognised but I can't use it now. Could be my adaptor though. People seem to have the issue appear following phone updates
Click to expand...
Click to collapse
Well I gave my phone to the official samsung service and waiting for their reply. I don't think I installed any updates before and after the issue appeared (at least not firmware updates but not sure about oculus or other apps) . By the way it is not the adaptor that has the issue. I tried many others on my phone. And the adaptor works with a friend's S8 (not plus). Only one works (well not really). It iss an OTG type-c to micro usb (bought from ebay) which comes up with a notification that high powered device was connected but then nothing happens whatever option I choose. And it is not a high powered device because it used to work. I tried even a mouse with its own battery. But if it was a phone update, I think a factory reset should fix it? It did not for me.
Do you think of taking your phone to the official service too?

A full factory reset also didn't work for me. From other forums it seems that other people who have taken them in for service receive a replacement phone. Some people however then mentioned that they encountered the same issue a few months later with the replacement. I would take mine to Samsung but it's a grey import and Samsung refuse to touch them even though it's the same model sold locally. If it's definitely a hardware fault I'll consider sending it away but it would be an international service which would leave me without a phone for quite some time.

Yes, you are right. Some people saw the issue after a few months of getting the replacement phone or even after restoring their google account and settings (without being able to get it fixed by factory reset). This is what actually scares me the most because it looks like hardware issue of the phone in general. It looks like a well known issue which samsung does not officially accept. SiImilar to the pink line on S7 edge I had before. Anyway, as charging and connection to pc still work, I can give my phone and get a new model later cheaper. The last two samsung flagships came with issues that (the most important) samsung does not accept officially. Maybe it is time to change brand (always android though).

I got my phone back from samsung service. They did not replace my phone but they replaced both the logic board and the type-c board. As expected, it works again with OTG devices and Gear VR as it is like a new phone after replacing all that. Installed all apps again one by one (not restored from backup) and everything still works. Hope it stays like that. So hardware issue? Looks like it.

I know this is an old thread, but I replaced just the USB board and it didn't fix anything. So maybe it's a motherboard issue?

Galaxy A72 unresponsive touch screen

Hi I have a Samsung galaxy A72 SM -A725F/DS
When my phone is locked for a while in my pocket the touch screen becomes unresponsive and have to hard reboot after reboot touch screen works perfectly fine.
My phone is not rooted still original firmware
Some help would be much appreciated

GoldenJet said:
Hi I have a Samsung galaxy A72 SM -A725F/DS
When my phone is locked for a while in my pocket the touch screen becomes unresponsive and have to hard reboot after reboot touch screen works perfectly fine.
My phone is not rooted still original firmware
Some help would be much appreciated
Click to expand...
Click to collapse
Go to system settings>display, see if you have a setting called "Accidental Touch Protection" and if it is enabled. That feature could be activating and then freezing the screen when you try to turn it back on.

Droidriven said:
Go to system settings>display, see if you have a setting called "Accidental Touch Protection" and if it is enabled. That feature could be activating and then freezing the screen when you try to turn it back on.
Click to expand...
Click to collapse
Hi there thanks for the reply I have tried that and still have the same problem maybe unlocking the phone and reinstall software will help I have an idea it could maybe be software related?

GoldenJet said:
Hi there thanks for the reply I have tried that and still have the same problem maybe unlocking the phone and reinstall software will help I have an idea it could maybe be software related?
Click to expand...
Click to collapse
Yeah, that would solve any software issues. If there is still a problem after that, maybe hardware damage?

Droidriven said:
Yeah, that would solve any software issues. If there is still a problem after that, maybe hardware damage?
Click to expand...
Click to collapse
Can't think of hardware damage cause then it will be permanently it only happens sometimes when screen is locked.
Need to know where to download proper and original software?

GoldenJet said:
Can't think of hardware damage cause then it will be permanently it only happens sometimes when screen is locked.
Need to know where to download proper and original software?
Click to expand...
Click to collapse
Google search for:
"Return to stock (your specific model number)"
That should find links to firmware, software tools and guides.

i have the same problem right now a72 can you tell me how you solved the problem?

Duygu13 said:
i have the same problem right now a72 can you tell me how you solved the problem?
Click to expand...
Click to collapse
My device still have the same problem it is sended to technicians I have an idea the main board is faulty will let you know what was the fix

GoldenJet said:
My device still have the same problem it is sended to technicians I have an idea the main board is faulty will let you know what was the fix
Click to expand...
Click to collapse
Hi there! What was the answer or Solution by technicians? Did they solved the problem?

Hi all there! As I see this issue is the same that A52 has. It's a typical factory problem that could be solved charging the main flex. That's the definitive Solution !

I have the same problem with my A72 (A725f)XID
Any solutions
I tried downgrading it didn't help
Changing the screen of flex also doesn't help
So it's a software problem
But any solutions???

I have the same problem. It seems that all A72 series are affected by this problem. The flex cable appears to be problematic. Almost every Samsung product I purchased had issues. So, never again Samsung.

Sorry for late reply for all questions above. My A72 was not even a year old it was sended to numerous shops from Samsung to the cheap Pakistani shops and it is Un repairable they said that there might Me a chance to repair it if I replace the main board but to find one is very scarce and a new one is almost the price of a new device.
To me personally I will never get a Samsung again my next upgrade will be Huawei,Google pixel or a Xiaomi or anything else I do think that the better devices like Samsung galaxy S22,S21FE and Z fold won't have problems like the A72 or A52 or there was just a big bach of manufacturing that went wrong.
But do let me know if you guys got it fixed in any way maybe I can have a try to fix mine then but to replace part for part and hope that it will be fixed is a expensive route to go.

No just make sure your next samsung is from the European or North /South american market
Then you won't have no issues
I use The A53 & A52s 5G now & i don't have problems

GoldenJet said:
Sorry for late reply for all questions above. My A72 was not even a year old it was sended to numerous shops from Samsung to the cheap Pakistani shops and it is Un repairable they said that there might Me a chance to repair it if I replace the main board but to find one is very scarce and a new one is almost the price of a new device.
To me personally I will never get a Samsung again my next upgrade will be Huawei,Google pixel or a Xiaomi or anything else I do think that the better devices like Samsung galaxy S22,S21FE and Z fold won't have problems like the A72 or A52 or there was just a big bach of manufacturing that went wrong.
But do let me know if you guys got it fixed in any way maybe I can have a try to fix mine then but to replace part for part and hope that it will be fixed is a expensive route to go.
Click to expand...
Click to collapse
I ordered a new main flat cable, and it was supposed to be delivered yesterday, but stupid NordPost in Norway did not deliver it in time. So, I must wait until Monday or Tuesday to get it. Basically, my phone has been opened and lying since Wednesday. I will update you, when I replace the cable. In any case, original main cable in Norway is very inexpensive. It cost me 110 nok or 11 euros.

Bigslime96 said:
No just make sure your next samsung is from the European or North /South american market
Then you won't have no issues
I use The A53 & A52s 5G now & i don't have problems
Click to expand...
Click to collapse
My A72 is from Europe. It seems it doesn't matter where it's from. All A72 models are effected with this problem.

drrastovac said:
I ordered a new main flat cable, and it was supposed to be delivered yesterday, but stupid NordPost in Norway did not deliver it in time. So, I must wait until Monday or Tuesday to get it. Basically, my phone has been opened and lying since Wednesday. I will update you, when I replace the cable. In any case, original main cable in Norway is very inexpensive. It cost me 110 nok or 11 euros.
Click to expand...
Click to collapse
You are lucky it is not expensive here in South Africa every thing is expensive if I take a guess it will be around R400, my phone acted actually weird because it started to have unresponsive screen restarted the device then will work for a few seconds then will have the same problem, sometimes my network signal will totally disappear and there will be two round sircles, sometimes when I charge my device it will show the phone is overheating even though the device was not even on for a while other times it will show the charging port is wet I can't think that the flex cable will cause all that problems

GoldenJet said:
You are lucky it is not expensive here in South Africa every thing is expensive if I take a guess it will be around R400, my phone acted actually weird because it started to have unresponsive screen restarted the device then will work for a few seconds then will have the same problem, sometimes my network signal will totally disappear and there will be two round sircles, sometimes when I charge my device it will show the phone is overheating even though the device was not even on for a while other times it will show the charging port is wet I can't think that the flex cable will cause all that problems
Click to expand...
Click to collapse
Same problem i had when charging. Try this fix

I replaced the main flat cable, and so far, my phone is working. I will report again in a few days.

drrastovac said:
I replaced the main flat cable, and so far, my phone is working. I will report again in a few days.
Click to expand...
Click to collapse
That's great news mate let me know in a few days then I will replace mine