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[Q] Display problem(spot, pressure remains)

So, few days ago my Touch pro(GSM) started with this weird issue. It looks like a circular spot <1cm diameter. It looks like pressure is applied to the display from back of the display. I tried to take photo when I disassembled phone and tried to resolve this, but display is glossy and camera cannot properly focus :-( spot i located in place where there are hatch(door) mechanism on back. When I dissasembled phone there was nothing causing pressure. I found out that if I press corners on diagonal axis spot disappears. I think that back of the display is arched in some way and pressure on chasis of phone press arched back againts lcd crystals. It happened when I was wearing my TP in jeans pocket. So first thought was that some stich in pocket, or something was presing againts display, but I am almost sure that this is caused by pressure on body of phone. Its night here so I will see tommorow If dissasembling, tinkering with screwdriver helped, but I dont believe this much. Question is: Did someone experienced this kind of issue? How do you resolved it? Will buying new display from ebay help?(I think yes, but there is possibility that display is ok and body is deformed in some way)
Thanks for your time.

Does it look as an oil spot?
Try to raise the membrane with vacuum or sticker and you'll see,if it disappears for a moment.
If so,I am affraid,you have to replace display/digitizer.
I got this oilspot on one of my Himalayas.
Also touch isn't working on this place,anywhere else is working,but after raising the membrane.

Well, I am 100% sure that digitizer is ok, because spot was on display. Touch functionality was ok but display was having strange colors and after disappearing light yellow tint in place of spot. As I took apart my Touch pro, I was ok with buying new display so I looked how old si attached to the case and bended it a little. Spot disappeared and display is still ok and I consider it repaired. Maybe it was really only the bended back or it was one of those self repairing defects.

[Q] Proximity Sensor Busted LG G2. Workarounds please?

Hi I have bought an LG G2 D802 from eBay for practically nothing. The only thing that was wrong with it is that the screen had been replaced by what I presume is a cheap Chinese copy and after the replacement the screen would seem to turn off randomly (particularly during calls) and could not easily be turned back on again. Otherwise the phone works fine. The only thing that doesn't work is the proximity sensor. However I presume that this is a result of the new screen. Having read around on several forums, it seems that the proximity sensor is extremely sensitive to things like screen protectors, which can obstruct, or limit or prevent the functionality of the proximity sensor entirely. I therefore concluded that the likely issue was because the proximity sensor is likely to only respond to light over a given number of polarities (dark infra-red, placed against face, something similar I presume, in daylight or bright light, nearer the blue end of the spectrum etc). This would simplify how the proximity sensor should work under a number of given scenarios.
In the end the workaround was simple. I simply opened the phone and disconnected the proximity sensor and placed a small piece of insulating tape over the sensors connectors so it couldn't inadvertently reconnected when I closed the phone. The phone is now 100% fully functional, minus the proximity sensor of course. It now just functions like any other normal smartphone. I am naturally more than pleased with this outcome, given what I paid for the phone, which itself is in otherwise mint condition.
However the question I have is that the reason the proximity sensor was included was to prevent accidental button presses when making or receiving a call, when for example the phone is pressed against one's face. However it strikes me that exactly the same functionality should be possible in software? What I am looking for then is an app that will either lock the screen (or turn it off) to prevent accidental button presses in this way while a call is in progress and that will disable itself as soon as a call is ended. I of course need to be able to easily disable it, either from the lock screen, or via the power button, so that for example when I dial an automated dialling service and they want me to press buttons to navigate their menu I can still do this.
There seems to be a few apps around that can do this, but my question is, which is the best? Which is likely to cause the fewest problems for what I want?
I have ordered a new proximity sensor from China in case the proximity sensor itself might be at fault, but really having read that this can cause several problems and is rather more 'gimmicky' than practical, I think a software solution would probably be better anyway.

it should be replace with same hardware sir to be able for your device able to control it.

So has anyone found a fix for this problem aside from replacing the sensor itself? Maybe a build.prop or by using terminal. My phone screen wont stay on because it detects its in my pocket all the time posted screens below of useful info.
Sent from my VS980 4G using XDA Free mobile app

If you don't have the patience to read my story, skip to the solution at the end
Guys (and girls)!, I have found the solution, it took me like 6 hours to figure this out.
I have LS980 (LG G2 ofcourse).
I replaced the screen, and I actually refurbished the screen with LOCA glue myself, it is perfect, but apparently there's an issue with the proximity sensor, due to the specific shade they use to cover the inside of the glass at the location of the proximity sensor.
After replacing the screen, the Knock ON was not working, but KNOCK OFF was working fine.
In the Sensor Box i saw that i was getting half of the light that i was supposed to (on another LS980 i was getting about 800, while on the "faulty" one i was getting 400 light.)
And also the proximity sensor was dead, it showed 0.0 and a fallen plant.
I tried putting some tape, and colored it with a permanent market between the proximity sensor and the glass, and the KNOCK ON began to work, but during calls, the screen would not shut off.
I figured, there must be some SYNC between the light the screen is getting, and the proximity sensor, so i scraped off the paint that was on the glass where the proximity sensor is, so there will be much light coming in, and IT WORKED!!
SOLUTION:
Scrape off the dark paint on the glass (inside) at the location of the proximity sensor. do it gently.
clean it with alcohol so there will be no remains of paint.
don't be shy to press the Thanks button if this worked

Thank you work great
MosesTheTool said:
If you don't have the patience to read my story, skip to the solution at the end
Guys (and girls)!, I have found the solution, it took me like 6 hours to figure this out.
I have LS980 (LG G2 ofcourse).
I replaced the screen, and I actually refurbished the screen with LOCA glue myself, it is perfect, but apparently there's an issue with the proximity sensor, due to the specific shade they use to cover the inside of the glass at the location of the proximity sensor.
After replacing the screen, the Knock ON was not working, but KNOCK OFF was working fine.
In the Sensor Box i saw that i was getting half of the light that i was supposed to (on another LS980 i was getting about 800, while on the "faulty" one i was getting 400 light.)
And also the proximity sensor was dead, it showed 0.0 and a fallen plant.
I tried putting some tape, and colored it with a permanent market between the proximity sensor and the glass, and the KNOCK ON began to work, but during calls, the screen would not shut off.
I figured, there must be some SYNC between the light the screen is getting, and the proximity sensor, so i scraped off the paint that was on the glass where the proximity sensor is, so there will be much light coming in, and IT WORKED!!
SOLUTION:
Scrape off the dark paint on the glass (inside) at the location of the proximity sensor. do it gently.
clean it with alcohol so there will be no remains of paint.
don't be shy to press the Thanks button if this worked
Click to expand...
Click to collapse
Thank you work as described thanks

keithlyn said:
Thank you work as described thanks
Click to expand...
Click to collapse
Use the thanks button! :fingers-crossed:

I just got my screen replaced, and this is happening to me. Is this something I can do myself?

My Fix
I apologize for bad english. If anyone knows SERBIAN and want to translate beter contact me.
Before you start to scrach the touch, try this.
On LG D-802 , the ruber thing on the proximity sensor was cousing me promblems. CUT the ruber only the part atached on the light sensor and proximity and turn it around. The big hole that was once on the light sensor(Ruber) comes on the proximity...
And that fixed my proximity. Now the light sensor is covered with the small hole on the ruber and the small amount of light is passing try that hole, try spreading it with heated something.
If questions PM me.

I think I am having the same problems with a G2. The digitizer on my girlfriend's phone broke so I replaced it with a digitizer/screen combo. No we can only turn the screen on (power button or knock) when there is a lot of light in the room. If it is dark, the screen will turn on for a second and then turn off. The screen doesn't go dark during a call either.
This problem didn't start until I installed the new screen. I scraped half the paint off but it didn't seem to make a different. I also don't have the screen completely sealed as I didn't have tape pre-cut for the shape of the phone. I wouldn't think that makes a difference but who knows.

Screen won't turn on, thus stays black during call.

Hey, when i receive and accept a call, my screen immediately turns off. Like it should when i put my ear up to it. But during the call i cant do anything to get the screen to turn on. After the call i have to press the lock button and unlock it again to get it on.
1) bootloader unlocked
2) custom kernel?
3) stock ROM?
4) rooted?
6) What version of the OS are you on? MM 6.0.1 / .511
7) This is recent, tried with 2 different roms so it isnt rom reliant i guess.
8) When in service menu and testing the light sensor it responds on my hand covering the sensor so i don't think its faulty.

J03llV said:
Hey, when i receive and accept a call, my screen immediately turns off. Like it should when i put my ear up to it. But during the call i cant do anything to get the screen to turn on. After the call i have to press the lock button and unlock it again to get it on.
1) bootloader unlocked
2) custom kernel?
3) stock ROM?
4) rooted?
6) What version of the OS are you on? MM 6.0.1 / .511
7) This is recent, tried with 2 different roms so it isnt rom reliant i guess.
8) When in service menu and testing the light sensor it responds on my hand covering the sensor so i don't think its faulty.
Click to expand...
Click to collapse
Clean your screen protector, if you have plastic protector REMOVE the screen protector.
Flash FTF with all WIPE options selected..

sceryavuz said:
Clean your screen protector, if you have plastic protector REMOVE the screen protector.
Flash FTF with all WIPE options selected..
Click to expand...
Click to collapse
I have tempered glass with a cutout for the sensor though..

J03llV said:
I have tempered glass with a cutout for the sensor though..
Click to expand...
Click to collapse
Mostly, screen protector cause that. Second sensors might be broken. Software is the last thing (if comes with stock)..

Go to *#*#7378423#*#* service test and go to proximity sensor, if it stays "ON" something is wrong with the proximity sensor, if you are absolutely 100% sure nothing is blocking your sensor, have you ever changed your display assembly? try pressing down around the top right of screen with a little force, both front and back if it switched to "OFF" when you press your screen there's a slight gap between your motherboard and front glass.

webslasher said:
Go to *#*#7378423#*#* service test and go to proximity sensor, if it stays "ON" something is wrong with the proximity sensor, if you are absolutely 100% sure nothing is blocking your sensor, have you ever changed your display assembly? try pressing down around the top right of screen with a little force, both front and back if it switched to "OFF" when you press your screen there's a slight gap between your motherboard and front glass.
Click to expand...
Click to collapse
Holy this is it. I had to get my front glass replaced because it was shattered, when i press the screen it turns off, when i block the sensor it goes back to on again until i press on the screen. Also my vibrator motor seems to not function properly since, it sometimes doesnt vibrate at all, and sometimes with very little feedback. Could this also be a result of the replacement?

J03llV said:
Holy this is it. I had to get my front glass replaced because it was shattered, when i press the screen it turns off, when i block the sensor it goes back to on again until i press on the screen. Also my vibrator motor seems to not function properly since, it sometimes doesnt vibrate at all, and sometimes with very little feedback. Could this also be a result of the replacement?
Click to expand...
Click to collapse
It could be the glue is not settling in correctly and adds very little gap than original one, did you replace the screen yourself? Mine showed this behavior I then reheat the edges of the screen with hair dryer then put pressure around the screen with those black paper clips, reheat it again then let it cool for about 2 hours.
I'm not entirely sure about the vibrator motor

webslasher said:
It could be the glue is not settling in correctly and adds very little gap than original one, did you replace the screen yourself? Mine showed this behavior I then reheat the edges of the screen with hair dryer then put pressure around the screen with those black paper clips, reheat it again then let it cool for about 2 hours.
I'm not entirely sure about the vibrator motor
Click to expand...
Click to collapse
No, I had it done by a company in phone repairs. But i kinda regret fixing it instead of buying a new phone tbh..

J03llV said:
No, I had it done by a company in phone repairs. But i kinda regret fixing it instead of buying a new phone tbh..
Click to expand...
Click to collapse
I bought this phone second hand and it had this issue, What I did was hair dryer and paperclip. and ..... try a more ghetto solution, which involves opening the back door, put some foam and double tape it near the camera module, there's an empty space. Make sure it presses the motherboard but not too hard or it will compromise the waterproof glue holding the back cover.
I took a picture of what I did to fix my issue
http://imgur.com/a/5bwuN

webslasher said:
I bought this phone second hand and it had this issue, What I did was hair dryer and paperclip. and ..... try a more ghetto solution, which involves opening the back door, put some foam and double tape it near the camera module, there's an empty space. Make sure it presses the motherboard but not too hard or it will compromise the waterproof glue holding the back cover.
I took a picture of what I did to fix my issue
http://imgur.com/a/5bwuN
Click to expand...
Click to collapse
I'm not going to try that lol, i'm sure I will **** it up big time.. Im going to email the company trying to get something happen..

I had that issue, but since I run custom ROM such as SlimX no more black screen don't know why ?

Just for info is someone has this problem, i had small skin flake on the sensor hahahha.

Auto Focus does not work after replacing back glass

I just replaced the back glass and noticed that the auto focus does not longer work. The camera just won't focus at all.
I tried to cover the 3 dots at the back but it didn't fix the problem. Still very blurry picture at any distance.
What went wrong?
Ps: does the camera move in order to focus? Because I think there is a tiny piece of glass between the camera and the plastic edge behind the replaced back glass. I tried to get it out before installing the glass but instead of removing it I somehow managed to dig it deeper. My guess is it could block the camera from moving.

marf3 said:
I just replaced the back glass and noticed that the auto focus does not longer work. The camera just won't focus at all.
I tried to cover the 3 dots at the back but it didn't fix the problem. Still very blurry picture at any distance.
What went wrong?
Ps: does the camera move in order to focus? Because I think there is a tiny piece of glass between the camera and the plastic edge behind the replaced back glass. I tried to get it out before installing the glass but instead of removing it I somehow managed to dig it deeper. My guess is it could block the camera from moving.
Click to expand...
Click to collapse
If the glass was broken and autofocus isn't working, chances are there is glass inside the camera. Parts of the camera do have to move in order to autofocus correctly. I would recommend taking off the glass, turning the phone upside down(so the camera is facing the ground), and hitting the phone hard( but not breakig it obviously.) This may even work without taking the glass off, you'll just have to try it. This would hopefully knock some of those pieces of glass free.
---------- Post added at 02:32 AM ---------- Previous post was at 02:29 AM ----------
BTW, this could also be caused if the glass is dirty on the side with the camera.

marf3 said:
I just replaced the back glass and noticed that the auto focus does not longer work. The camera just won't focus at all.
I tried to cover the 3 dots at the back but it didn't fix the problem. Still very blurry picture at any distance.
What went wrong?
Ps: does the camera move in order to focus? Because I think there is a tiny piece of glass between the camera and the plastic edge behind the replaced back glass. I tried to get it out before installing the glass but instead of removing it I somehow managed to dig it deeper. My guess is it could block the camera from moving.
Click to expand...
Click to collapse
Do you have a link for the rear glass you purchased? I broke mine about 2 months ago and every replacement I've bought is not oem, it has adhesive covering most of the back instead of just on the edges, also there's a hole cut out for one of the sensors when it shouldn't be.
As for your issue, they "windows" for the camera or sensors might be dirty, or even a spec of dust throwing off the auto focus.
shagbag913 said:
I would recommend taking off the glass, turning the phone upside down(so the camera is facing the ground), and hitting the phone hard( but not breakig it obviously.)
Click to expand...
Click to collapse
Lol I wouldn't recommend banging it. Would probably have better success using tweezers and compressed air to remove whatever is there.

fone_fanatic said:
Do you have a link for the rear glass you purchased? I broke mine about 2 months ago and every replacement I've bought is not oem, it has adhesive covering most of the back instead of just on the edges, also there's a hole cut out for one of the sensors when it shouldn't be.
As for your issue, they "windows" for the camera or sensors might be dirty, or even a spec of dust throwing off the auto focus.
Lol I wouldn't recommend banging it. Would probably have better success using tweezers and compressed air to remove whatever is there.
Click to expand...
Click to collapse
Banging it would probably be the best option. If there's tiny shards of glass in your camera your not just going to get it all out with tweezers. Compressed air could work, but if you don't have compressed air banging it (aka lightly tapping the top of the screen to get the glass out) is probably your best bet.

Did OP ever resolve this issue? Dealing with the same thing now...

Same issue for me. Any idea how to make focus works again? I have dirty lens message from time to time... Is focus in lens or laser near the lens?

I'm having the same issue.
marf3 said:
I just replaced the back glass and noticed that the auto focus does not longer work. The camera just won't focus at all.
I tried to cover the 3 dots at the back but it didn't fix the problem. Still very blurry picture at any distance.
What went wrong?
Ps: does the camera move in order to focus? Because I think there is a tiny piece of glass between the camera and the plastic edge behind the replaced back glass. I tried to get it out before installing the glass but instead of removing it I somehow managed to dig it deeper. My guess is it could block the camera from moving.
Click to expand...
Click to collapse
mweiss8 said:
Did OP ever resolve this issue? Dealing with the same thing now...
Click to expand...
Click to collapse
belek1979 said:
Same issue for me. Any idea how to make focus works again? I have dirty lens message from time to time... Is focus in lens or laser near the lens?
Click to expand...
Click to collapse
Hi Guys,
I'm having the same issue. How did you manage to fix it?

Did anyone solve this? I have the exact same issue now.

Same issue here. Anyone got sucess?

Just replaced my back glass yesterday and the focus stopped working, I pray to christ I didn't E-8000 my camera in place Ill take the screen apart sometime soon and let you know If I resole the issue

Blank Screen on phone when using Phone.

When I make or receive a call the screen on my 9A immediately blanks and I can do nothing until the call ends.
How can I prevent this from happening?

don't put it to your head.
clean proximity sensor or remove glass/foil protection. My 9a often yells that my sensor is blocked, but I have it on the table or car seat, so no way.
there are codes to test every single part of phone (maintenance or service menu)

yaro666 said:
don't put it to your head.
clean proximity sensor or remove glass/foil protection. My 9a often yells that my sensor is blocked, but I have it on the table or car seat, so no way.
there are codes to test every single part of phone (maintenance or service menu)
Click to expand...
Click to collapse
I don't put it to my head - I don't get the chance.
As soon as a call comes in the screen goes blank.
I took off the screen protector and cleaned the glass - no improvement.
In the Proximity test menu it should show a value of 5 and go to 0 when it is covered - but it never shows 5, and is stuck on 0.

I wondered if cleaning the proximity sensor may help, so I followed this video to do that -
At 2:05 in the video, he takes out a small black piece and then cleans the back of the glass in the opening.
I don't have that piece, does anyone know what it is?

try to calibrate it INSTRUCTIONS
if that doesn't help you can try to use flat screwdriver and scratch glass where Proximity sensor is placed (the glass).
I have encountered it in some iPhones aftermarket LCDs (the dark layer was too thick)

yaro666 said:
try to calibrate it INSTRUCTIONS
if that doesn't help you can try to use flat screwdriver and scratch glass where Proximity sensor is placed (the glass).
I have encountered it in some iPhones aftermarket LCDs (the dark layer was too thick)
Click to expand...
Click to collapse
Thanks
Can't seem to find anywhere to calibrate - can't turn it off either (unlike in previous versions)
I will try scratching the glass.

I tried scratching the glass - no luck.
I wonder if the problem is the piece shown in the above video - which is not on my phone .

if you still have it i. parts, just boot to android, go to service menu and test sensor on the table (don't put it beside LCDs glass).
if it still doesn't work, it would be a good idea to replace it (xiaomi parts are cheap).
Or go to youtube and search for xiaomi proximity calibration

yaro666 said:
if you still have it i. parts, just boot to android, go to service menu and test sensor on the table (don't put it beside LCDs glass).
if it still doesn't work, it would be a good idea to replace it (xiaomi parts are cheap).
Or go to youtube and search for xiaomi proximity calibration
Click to expand...
Click to collapse
When I go into the menus to test the proximity sensor (*#*#6484#*#* on the phone keypad) it should have a value of 5 until you cover the sensor at which point it should changs to 0. Mine shows 0 constantly - implying the sensor is covered.
Where can I get the parts - I am in the UK.

for me it gets value 1 when nothing is close and 0 when I approach sensor.
just go to aliexpress, amazon, ebay, etc. there are tons of shops qith parts

yaro666 said:
for me it gets value 1 when nothing is close and 0 when I approach sensor.
just go to aliexpress, amazon, ebay, etc. there are tons of shops qith parts
Click to expand...
Click to collapse
I had searched those and also generally on the internet - unfortunately, I couldn't find anyone listing general spares.

here is an interesting article about sensor