Screen Flicker/Flash - AT&T Samsung Galaxy S7 Questions & Answers

I just got a used unlocked G930A. I used odin to update to 7.0. When I use any app the screen will go dark for a fraction of a second maybe once or twice a minute . it will also pause youtube video once or twice a minute. Both problems also happen in safe mode. I'm not sure if it did on android 6. Any ideas, I would really appreciate any help, i'm all out of ideas.
Thanks

It could be related to water damage. If water got into the phone, especially through the sim card slot, the phone screen will act crazy. Since you got a used phone, it could be water damaged. It could also be the result of a hard- drop impact, causing the screen ribbon cable to slightly move on the inside. If you take out the sim card tray, and take a flashlight and shine it on the inside, you should see a white sticker with red X's on it. If the sticker is full on red, with no white, then Im afraid your phone has been water damaged, and there is not much you can do about it other than get the phone repaired.

Related

dropped phone, camera not working right.

I dropped my phone and now when I turn the camera on its all blurry and out of focus. The screen is a yellow colour and the photos turn out the same as the screen shows it. Is it possible to fix this myself as its now out of warranty and was wondering if anyone has anything I could try. Thanks.
Take your phone apart and check the connection of the camera the connection is underneath the antenna housing. Be care if you have any more questions see this
http://xdafiles.100webspace.net/59807.
This helped me some what. Ive been a repair tech for almost 5 years soo hey. Its always a learning experience.
Hi thanks for the advice and link will give it a try.
well good news bad news. I took it apart and found the camera module was indeed misplaced, so put it back in and put the phone together again. When I turned it back on I got an invalid or missing sim on the screen. tried different sims know to work but still no joy. The camera works now though. Took it apart again to see if I missed something but cant see anything, infact I wasnt even anywhere near the sim holder. Any ideas why the sim reader has stopped working, I must have done something to it.
Does the sim card appear to be at all loose?
if so try bending the edges of the holder in slightly... otherwise, check the contacts are clean on both the sim and the phone..
Cheers
Steve
Sometimes it can be something as simple as its not pushed in all the way. Also like the fella above stated. If your sim card housing is loose it wont make the proper connection. If all else fails pick up some denatured alcohol and a cheap tooth brush. Gentle scrub the contact points. It works wonders.
screen got yellow?
well..first dismantling your phone and then, check the flat-cable that connects the LCD and mainboard, then the camera connection..

Phone Not Starting only giving White Screen

Dear All,
My phone fell in a water bowl, I picked it up and quickly took out the battery.
After sometime I dried my phone and inserted back the battery and turned the phone ON and its not starting it is only giving me White Screen.
As far as I think , the software is currupted. I think i will have to re-install my ROM
what do I do ? please help me with this.
Thanks.....
Raheel.
Ok,
I just started the phone again, it is now starting well, the Signal light is also blinking and the keyboard sensor is also working.
but the screen is still WHITE.
It is giving me white screen still. please help me with this...i have read other posts people say that the white screen appears when the cable is damaged ,but my cable is not damaged at all, it was all working fine untill i dipped it into the water.
one more observation, when i keep the phone on for about 2 minutes, some part of the screen becomes Black , while the rest is white.
Please please please help me ..................
It may have been fine before the water bowl incident, but it does not take much to upset the connection between D/Pad and screen.
Just a little moisture on the d/pad or on the contacts of the d/pad connector is enough to create a poor connection and that dampness can also start oxidisation of contacts all over the place.
You might be lucky in that if you leave it lying around for long enough in a dry atmosphere , one day it might start working ok. Otherwise it will need dismantling and cleaning of the d/pad board and disconnection, cleaning and reconnection of the connector.
Mike
Well, I can give you some advise. Just Try returning the Hermes to Stock Firmware, or Windows Mobile 6. If that doesn't work, i recommend just buying a used unlocked Hermes off ebay. You can get one for no more than $200

HD2 Screen Backlight Problem?

Hey guys! I have searched the forums and haven't found a problem quite like this yet. Recently, I got some water on my phone, but was able to wipe it off, and it worked fine, and the water damage indicators on the phone are still white. During that day though, after rebooting the phone, the screen appeared to not turn on, so i thought it WAS water related damage, of course.
I put the phone in rice for a few days, and NOTHING, till one day i looked at the phones screen under intense light.
The phone vibrates after you power it on, but then that's all you get, but upon further inspection under a bright light you can see the MAGLDR boot screen come up, and load all the way to the GO GO GO part, then it freezes and stops.
The screen is still black, and there's no light at all, you have to hold it DIRECTLY under bright light to see it.
I am ..or was...running the android NexusHD2 gingerbread 2.2 NAND (2.3.2) rom with MAGLDR 1.12 installed.
I can get into the boot menu, and all the hard buttons work. I can even play tetris, when i can see it. >.>
The MAGLDR seems to work fine, the android doesnt work, or load anyway.. I an go into USB flasher, option 5 on the boot menu, and reload android, but it does not resolve the problem.
Any suggestions oh wise XDA members?
I am not an expert when it comes to the hardware side of tbe HD2, bjt I am learning. It kinda sounds like you may have got some water inside the unit either through the speaker opening t the top of the front of the phone or in around the small openimgs around the buttons at the bottom of the front of the phone. My bet is it was the buttons cuase this is close to the digitizer. And it sort of sounds like the digitizer is malfuncting.
Seeing as you have tried reflashing the ROM the only real sugestion I got is maybe get you a small hex head screwdriver and open up your HD2. Take the mainboard out and the digitizer out and very lightly use a hair dryer on the low setting to try and dry them out. make sure to bold the dryer a good distance from them cause you do not want to get them hot just dry them out.
Now you still have a waranty I would just do a warranty exchange or have them repair it. If you don't have a warranty and don't want to try this I do not blame you. It is just the only idea I have. You can always find a cell phone repair shop and have them do it.
Best of luck.
This happened to me too. My HD2 was completely submerged, but luckily for me I had the torx needed to immediately open it up. I didn't use a dryer, but I did towel it off. Then I just left it off and apart for 5 days before I actually put in the battery and turned it on. I did have to replace the screen because it cracked to hell, but my main concern was knowing that it would still function. Good Luck.
Okay, I contacted HTC today after reinstalling winmo 6.5 stock for the HD2, A guy named bob told me I could send it in and have it repaired covered by HTC. My guess is that because the water damage indicators are white, they shouldn't void me, right?
I am guessing it IS the digitizer because of the following reasons.
Winmo works fine, though the sim card will need to be replaced, which is no problem. the touch screen does not function and the screen is still black and wont light up, but winmo boots successfully, like I said, viewing under bright light.
I think I am going to try and send it to HTC, if they say its void, then I am going to try repairing the digitizer, as the tmo digitizers are readily available now. Before that though, I will try your suggestion T-Macgnolia.
I'll post my results soon!

[Q] Scary brown patch on white screen on Tmous Hd2.Need help

Ok..so i've been using my TMOUS Hd2 for sometime,but suddenley i see a scary brown patch on the white screen of my hd2..like a ghost looking at me..you know i mean..my question here ,is it a faulty lcd? or motherboard issue? or digitizer? but hey wait let me tell you everything works fine..the touch is perfect no screen lags,no freeze on screen..working flawless only when the phone pulls up white background like browser & start up screen "stick together" overall any white background the brown patch shows up..can anyone confirm this issue..any fix?Please let me know.. appreciate all the help..thanks much
Attaching the pic of brown patch ghost sitting inside my Hd2
if it is located around the middle, top half of the creen, it could be pressure related to an expanding battery. Does the patch get worse if you press on it? It seems illogical that a glass screen would be susceptible to newtonian pressure rings, but in the case of an expanding battery, when you press the screen, the pressure is actually coming from the back.
I've had like a dozen HD2's, and first noticed it when I used an aftermaket battery, which after a few months started getting thicker and thicker and I noticed the newtonian pressure rings. If that's the case with you, go back to the stock battery, or take out the battery door and try it again to see if problem goes away. If it goes away, you know it's time for another $3 ebay battery!
@ atlaswing did you actually check the screenshot attached? the brown patch is not just in the middle it's starting from the bottom and going upward..like a volcano eruption..u know i mean?..i haven't used aftermarket battery,but yes i did buy one to keep it handy..so i'm using the original battery,but well i see that the water damage sticker on the phone battery outlet inside it looks white so its not water damaged i still got void sticker on..so never opened for service,but yes the sticker on battery has turned lil pinkish white..not red to be called water damaged.probably moisture or kinda stuff,but my concern is what i said above ,its like a brown patch all around the white screen,which don't make any issues with the usage or touch or any hang or freeze
Anyone know if this is an issue with the digitizer or just the lcd screen?
I would lean towards lcd but would need device in hand to be more sure.
lcd has a plastic film on it so could be an issue with that ...

[Q] Potential water damage [Need help before service]

Hi,
After using my phone after a workout I'm afraid I water/moist damaged the touch screen. The screen suddenly started to make touch inputs by itself and then I turned the phone of, removed the back cover to check for any liquid. I noticed that there unfortunately were some moist behind the back cover.
So I decided to leave the phone off without the back cover to hopefully dry up for about 24 hours. But when I turned the phone on again the touch screen was totally unresponsive. So I guess the moisture broke something in the screen (from my googling I'm suspecting the digitizer).
But my question is if anyone knows or is willing to check on their working phones what color the moisture indicator (not sure if there actually are two indicators on the D802??) on LG G2 is when it's indicating water damage? I'm guessing that it is red when there has been water on it but unfortunately I couldn't find any high quality pictures on Google showing the original color of the moisture indicator and the color of a indicator that has been exposed to water.
I'm planning on giving it a try to use my factory warrenty to have the screen replaced but if the moisture indicator clearly shows that there have been water involved, I might have to reconsider
Anyhow, I would be very happy if someone is willing to upload a picture of an untouched, non water damaged, moisture indicator(s).
Of course, if someone has any tips regarding why the screen is unresponsive, you're more than welcome to share
Thanks in advance!
Andreas
bobboviking said:
Hi,
After using my phone after a workout I'm afraid I water/moist damaged the touch screen. The screen suddenly started to make touch inputs by itself and then I turned the phone of, removed the back cover to check for any liquid. I noticed that there unfortunately were some moist behind the back cover.
So I decided to leave the phone off without the back cover to hopefully dry up for about 24 hours. But when I turned the phone on again the touch screen was totally unresponsive. So I guess the moisture broke something in the screen (from my googling I'm suspecting the digitizer).
But my question is if anyone knows or is willing to check on their working phones what color the moisture indicator (not sure if there actually are two indicators on the D802??) on LG G2 is when it's indicating water damage? I'm guessing that it is red when there has been water on it but unfortunately I couldn't find any high quality pictures on Google showing the original color of the moisture indicator and the color of a indicator that has been exposed to water.
I'm planning on giving it a try to use my factory warrenty to have the screen replaced but if the moisture indicator clearly shows that there have been water involved, I might have to reconsider
Anyhow, I would be very happy if someone is willing to upload a picture of an untouched, non water damaged, moisture indicator(s).
Of course, if someone has any tips regarding why the screen is unresponsive, you're more than welcome to share
Thanks in advance!
Andreas
Click to expand...
Click to collapse
Hi, this exact scenario happened to me a few weeks ago, when I answered a call while sweating profusely. In my case I noticed that all of a sudden I could not hear the person on the other side of the call so I plugged in my headset and completed the call. The speaker grill was just a bit wet, but the screen was covered in sweat, specially so on the area that now does not work.
Then I started noticing the screen started to fail on the now common horizontal zone on the upper part of the screen only.
I have not managed to make it work since. I guess a full screen replacement is at hand... But I'm waiting to get a smartwatch, so maybe the screen will come after that, if ever.
Cheers
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