Strange Proximity sensor problem Exynos Note 4 N910C - Galaxy Note 4 Q&A, Help & Troubleshooting

Hi everyone,
Just got a factory refurbished Note 4, on Lollipop 5.1.1 and I am having a strange problem with the proximity sensor.
Basically, and similarly to several users on this forum, the sensor appeared not to be working (checked with *#0#*, CPU-Z, etc...). HOWEVER, if I press lightly on the top of the screen (no, not over the sensor, but that works too) the sensor goes back to working for anywhere from a few minutes to a couple of hours.
What gives? I would like to try and fix this w/o returning the phone or tripping Knox (root, new firmware, whatever). Any ideas.
Has anyone else had this behavior where the sensor seems not to work, but goes back to working temporarily if the top of the screen is pressed down a bit?
Thanks everyone!

i have n910c too. XSG.
acmbc said:
Hi everyone,
Just got a factory refurbished Note 4, on Lollipop 5.1.1 and I am having a strange problem with the proximity sensor.
Basically, and similarly to several users on this forum, the sensor appeared not to be working (checked with *#0#*, CPU-Z, etc...). HOWEVER, if I press lightly on the top of the screen (no, not over the sensor, but that works too) the sensor goes back to working for anywhere from a few minutes to a couple of hours.
What gives? I would like to try and fix this w/o returning the phone or tripping Knox (root, new firmware, whatever). Any ideas.
Has anyone else had this behavior where the sensor seems not to work, but goes back to working temporarily if the top of the screen is pressed down a bit?
Thanks everyone!
Click to expand...
Click to collapse
YES. i thought i was the only one. I only notice when i made 2 calls. I have this phone for 1 month now so i'm returning it to the store for repair(?). Also, when u push down the corners of ur screen, do you notice that it somewhats moves in?
just wondering, did u buy it from bhphotovideo or expansys?

Yes, I *do* notice it does move in a bit, although just on the top left side of the screen (which is how I "fix" the problem for 20 minutes). I bought the phone in Brazil where I live, so no, not BH or expansys.

Related

Galaxy S Proximity Sensor Problems

Hello People,
All of a sudden i am facing a issue with my SGS i9000,
My phone turns the screen OFF when is start a call, Dialing is OK, and the screen goes blank when I hold the phone up to my ear. But at the end of the conversation the screen remains blank, Pressing any buttons wont turn the screen back ON.... after a min or so te screen comes back.. or even when i connect my phone to a charger it works....
what might be the issue? has anyone faced similar problems with their SGS?
I hope there is a solution for this, even the warranty is over for this phone.
any help would be appreciated.
thanks
Have you found a solution? I have the same issue, I don't know if this is a hardware or software problem. I got back to stock rom (froyo JPY) but that didn't solve the problem...
I had the exact same problem and symptoms as you two described a few months ago with my I9000m. So I got fed up and opened it up and found the ribbon cable connecting the speaker and proximity/light sensor partially torn which is why the speaker was working while the proximity/light sensor was not.
You can also try Z-DeviceTest from the market. There's a proximity/light sensor test.
If you've still got a warranty on the thing, I would take it back to shop and have them deal with it. If your warranty is out then you have to do what I did and buy the part and replace it myself.
Here's the good news though. The module itself is pretty cheap at least on ebay.com (search i9000 speaker parts).
I replaced the one on my I9000m and bought another one of these (one to use as spare) because those ribbon cables seem so flimsy (you'll see what I'm talking about if you actually open it up and see for yourself ).
Thanks! I don't have warranty so I've bought it on a Chinese website ~10$ with shipping costs
I have seen this a few times. What appeared to work for me was simply covering the proximity sensors again with my finger for a second, then uncovering again. I say "appeared" as the timing could be a coincidence - but it has happened maybe 3 or 4 times on my phone - and I waited it out the first time, and each of the other times I did the above and it came right back.

[Q] Need help with screen

Ok so basically I love the g2, but here is my problem, bare with me on this haha, BTW its completely stock n everything as its my 1st Android phone so didn't want to mess with it. So basically I broke my phone screen in January, bought new screen, followed a YouTube tutorial, replaced LCD+touchscreen, no issues super happy, had the odd issue where if I woke screen, would only be on for a second n then go back to sleep, but then upgraded to KitKat through computer software update, still nothing wrong, upgrade fixed the issue with the knock to wake, and then my worst day, smashed the screen again! On good Friday, ok I thought I'll just replace screen again, so I did, but when I put new screen on and tested it, all was well, until I made a phone call, the instant moment I press green call button, screen goes blank and won't come on no matter what, power button don't bring it back on or end the call, but I can hear the other person and they can hear me, had to turn phone completely n back on to be able to use it again, so I though hmmm dodgey screen, but just to be sure it wasn't the phone I put damaged screen back on, and the issue didn't appear, stayed lit up while in my hand, went off next to my ear, back on whole in hand, so I took it to local phone repair shop because I couldn't be bothered going through the hasstle getting refunds etc, they replaced screen, I went and tested it before paying them, guess what, same problem, so what exactly is going on? Has KitKat made the phone not work with a new screen other than the one I upgraded it with? I'm seriously confused and need some bodies help urgently my model is an unlocked lg g2 d802 16gb now I turned it on last week before I took it to be repaired, and it says I have software updates but I didn't bother installing them, is there a chance these could be related to my issue and possibly fix them? Its driving me nuts tbh
Chris
Hey Chris. It seems like your proximity sensor is messed up. I think the new screen you got yourself is worse quality or your damaged the proximity sensor when installing the screen.
Edit:
Please go into your phone app (where you call people) and type the following
3845#*802#
Then go into: HW Device Test and then ALC proximity test. Try testing your proximity sensor with your hand. It should change from far to near when your hand is about 2 inches from your phone. The proximity sensor is located next to the camera.
Sent from my LG-D802 using XDA Premium 4 mobile app
Ok thank you I will try that, I also thought a damaged sensor but when I put damaged screen back on after having the issue with my new screen it worked just fine, no blank screen when making a call, I retested it before I left it at phone repair shop, still was fine, then picked it up with a new screen and issue came back, I don't get why its been like this, I'm thinking bad quality screen and maybe try scratching the sensor area of the new screen to allow more light in? It may be to dark for it, what exactly do I do if it works fine when using that code, try another screen?
Chris
I doubt it will work when you use that method. It's just to make sure that it's the proximity sensor that's the problem and not some loose connection. And yes, a new screen would be your best bet.
Sent from my LG-D802 using XDA Premium 4 mobile app
Ok I won't try that method then lol, what if it doesn't work when I use that code, as I said I didn't have the issue with the damaged screen which I tested after having the issue with the replacement screen I'd purchased, so how do I know its not just the screen not allowing the sensor to see? Is there anyway I can reset the sensor to relearn maybe?
Chris
If you follow my steps, nothing bad will happen. It's just a way of troubleshooting the proximity sensor. I still think you should do it.
Sent from my LG-D802 using XDA Premium 4 mobile app
Ok I've spoken to phone repair shop and they agree it worth a try to see if its the screen or not, I'll let you know on Saturday after I've been and tested it
Chris
I just had this exact same issue.Turns out the inside of the screen was just dirty. I opened it up and took a q-tip to the inside of the screen and it worked perfectly after that. Also check the readings of the light sensor, as it is right next to the proximity sensor, if the screen is the problem it will likely have low readings as well.
Great I'm glad somebody else has encountered this issue, its been driving me nuts lol ok so I dial in the code that's been mentioned and what are the labels in the menu for the proximity and light sensors? I'm thinking its just a crap screen as the broken 1 worked fine after I put it back on after testing new screen, and I reckon the screen the repair shop has used is also ****e quality, but I just want to cancel it all out as I don't have the phone to hand to inspect as they still have it lol is there a picture somebody can post up to show what to not cover when replacing the screen and applying adhesive tape etc? Just so I can show them to make sure they have done it all properly.
Chris
Ok so just to update the problem, I went to the phone shop today, did the test, it was showing near all the time, but the light sensor reading was quite high, 166 or something, but I then tried squeezing the screen, index finger on back and thumb on front, gently squeezed it, and proximity sensor started showing far, and near as I moved my hand over it, but after few seconds, went back to showing near constantly, so I think its the screen not been seated, told the shop to take screen off, give it a good clean and reseat it. This sound good to you guys?
Chris
Anyone?
Bump! I'm only wanting a little extra advice so I don't end up paying more money out for another screen when it could possibly be proximity sensor? I think it was just the screen not seated properly, anybody have an idea or something else to either assure my choice or point me in another direction?
Chris

Magnetic Sensor / Compass problem?

Similar to this problem for the S6 Edge:
http://forum.xda-developers.com/galaxy-s6/help/magnetic-sensor-compass-problem-t3109583
When reboot the device, the compass/magnetic sensor is not calibrated. Once I dial the *#0*# and then chose the sensors, and rotate the phone on the 3-axis, the magnetic sensor becomes calibrated, the number 0 and red line becomes number 3 and blue line in the black circle. However, if I decide to reboot, have to do it all over again, have to rotate the phone on the 3-axis to recalibrate the magnetic sensor.
It seems like the problem still persists on the S7 Edge, am I the only one?
Thanks,
JP
I have exactly this same problem on my S7 edge in Australia from Optus - compass re calibrated then when off and on again it needs doing again every time. It looks to me as if at least some S7 edge may have inherent compass sensor or software issue. I will try and replace it via shop but they said it may take many weeks to get a replacement once returned if out of stock as they would need return it to somewhere to check it...
Shaun123 said:
I have exactly this same problem on my S7 edge in Australia from Optus - compass re calibrated then when off and on again it needs doing again every time. It looks to me as if at least some S7 edge may have inherent compass sensor or software issue. I will try and replace it via shop but they said it may take many weeks to get a replacement once returned if out of stock as they would need return it to somewhere to check it...
Click to expand...
Click to collapse
I'm wondering if they are not all the same the S7 Edge, seems as if this was the case with my S6 Edge, almost everyone had this problem and Samsung wasn't doing much for it.
It seems as of this is the case for my wifes S4, my S6Edge and now my S7Edge.
Can anyone else confirm this? It's as easy as rebooting, then dialing *#0*# and then under Sensor...
I'm having the same problem on my S7 Edge.
Optus, Australia.
Maybe it's Exynos only, and SD don't have this issue?
My compass wasn't calibrated when I checked. Now is. Need to check if GPS works better now.
jsamuels said:
My compass wasn't calibrated when I checked. Now is. Need to check if GPS works better now.
Click to expand...
Click to collapse
You'll loose your calibration once you reboot the phone...
How do you calibrate the sensor?
Rickyw324 said:
How do you calibrate the sensor?
Click to expand...
Click to collapse
You rotate your phone along the 3-axis until it's calibrated
I do not believe this is a problem or issue! You need to calibrate each time you reboot. The same thing applies to the iPhone (blah!)
chippyuk said:
I do not believe this is a problem or issue! You need to calibrate each time you reboot. The same thing applies to the iPhone (blah!)
Click to expand...
Click to collapse
You think? It could be the case, as my S6E as well as my S4 do the same thing...
jproy12 said:
You rotate your phone along the 3-axis until it's calibrated
Click to expand...
Click to collapse
That was simple, thank you. :good:
chippyuk said:
I do not believe this is a problem or issue! You need to calibrate each time you reboot. The same thing applies to the iPhone (blah!)
Click to expand...
Click to collapse
Never had to recalibrate on any of the three iPhones I owned. And certainly not on the 6s Plus I used before getting the s7.
jsamuels said:
Never had to recalibrate on any of the three iPhones I owned. And certainly not on the 6s Plus I used before getting the s7.
Click to expand...
Click to collapse
Well you are right about the 6s as I just tried it. I don't think I even opened the compass on my 6 but after every restart on my 5 and 5s I definitely had to re-calibrate after a restart. Might be because I was jail-broken though. No idea then, hopefully someone who knows about the actual electronics may chip in...
Hi. Has anyone had an issue with the compass being very jittery after it has been calibrated?
When I reboot the phone, the compass works fine and is stable unless I calibrate it again. It is my second S7 Edge and I have had the exact same problem on both devices...
i've read the s6 thread and did the *#0*# thing and works!
(for those too lazy to read the link, basically press *#0*# on the call screen and it will bring up the "tests" screen
press the sensor
and will see the bottom, the status of the magnetic sensor
if it's not blue and has number 3 , than it's not "calibrated"
to calibrate, do the 3-axis thing (rotate the phone on 3 axis: turn it upside down height-wise, flip from side to side length-wise, twist it depth-wise) and the sensor will turn to number 3 and colored blue line)
(to exit which ever screens, just double press "back" button on the phone)
but my question is... (for those who've done it) seems like it has to be done (calibrate) on this "test" screen? can't calibrate if it's not this test screen?
Same here. Frustrating to need to recalibrate after reboot. Was the problem ever resolved with the S6 or should I just accept and learn to live with the issue?
this (calibration loss after reboot) was the case for every android device i owned so far since years!
so this is normal, and cant and wont be fixed!
TML1504 said:
this (calibration loss after reboot) was the case for every android device i owned so far since years!
so this is normal, and cant and wont be fixed!
Click to expand...
Click to collapse
I did not have any issues with my original HTC One, G3 or OnePlusOne. But, I guess it's going to be a fact-of-life.
Galaxy s7 edge
So i found the answer guys to fix searching for gps and gps not working. Running samsung galaxy s7 edge, also with optus but that doesnt matter. Soball you need to do is calibrate your phone, now you can download apps but if you use the built in app that comes with the s7, it works better
Step 1. Swipe the edge notifacations to bring up side display.
Step 2. Go into the settings, by touching the clog on the bottom left.
Step 3. Tick the widget for the compass, ruler.
Step 4. Go back to the home screen and swipe to bring up the side display.
Step 5. Go to the compass widget and in there, there is a calibrate button to click on and complete the calibration by spinning your phone on a axis as displayed and your done.
You wont have to redo it each time you restart like the other ways i have seen. I have contacted samsung about this, hopefully they fix this stupid issue.

Note FE - Touchscreen issue

Hey y'all,
Picked up a SM-N935L a few weeks ago. Last week, for no reason I can think of, the touchscreen started causing problems.
As of now, a 1 inch swath of the screen on left side doesn't respond to touches unless they are long touches. This is annoying on the homescreen, but IMPOSSIBLE when trying to type on the keyboard as the number key, shift, A, Q, and 1 key barely ever respond to touch.
AT first it was intermittent. Now it's permanent.
The S-Pen works perfectly, even in the affected area of the screen.
I tried flashing the original firmware the phone came with before the OTA, no dice.
Long story short, the phone is now back in it's box and I am back to my old n9005 Note 3.
Has anyone else run into this?
Before someone says that maybe the screen connector is loose on the motherboard, I cracked the phone open (heatgun, etc) and checked that. Not the issue.
I even tried the secret code *#6233*# which allows you to "update" the touchscreen firmware. No difference.
Any thoughts?
you didn't mention the software version you're using.... did you update to the latest OTA for the L version of the Note FE? Google Translation change log
Build Number: N935LKLU3AQG6 Android version: Nougat (Android 7.0)Release date: 2017-08-04
ㆍ Improve the phenomenon that the tone of the song is reduced or silenced in a specific environment
ㆍ Correct the phenomenon that the photo position information is displayed when the camera is shot
ㆍ Intermittently break when touching the upper / lower touch
Build Number: N935KKKU3AQFEAndroid version: Nougat (Android 7.0)Release date: 2017-07-06
ㆍ Apply stabilization code related to camera operation
My bad for.not being specific. Yes I am on QG6. I went back to QFE hoping for a change. No difference.
ClrDaLane said:
Hey y'all,
Picked up a SM-N935L a few weeks ago. Last week, for no reason I can think of, the touchscreen started causing problems.
As of now, a 1 inch swath of the screen on left side doesn't respond to touches unless they are long touches. This is annoying on the homescreen, but IMPOSSIBLE when trying to type on the keyboard as the number key, shift, A, Q, and 1 key barely ever respond to touch.
AT first it was intermittent. Now it's permanent.
The S-Pen works perfectly, even in the affected area of the screen.
I tried flashing the original firmware the phone came with before the OTA, no dice.
Long story short, the phone is now back in it's box and I am back to my old n9005 Note 3.
Has anyone else run into this?
Before someone says that maybe the screen connector is loose on the motherboard, I cracked the phone open (heatgun, etc) and checked that. Not the issue.
I even tried the secret code *#6233*# which allows you to "update" the touchscreen firmware. No difference.
Any thoughts?
Click to expand...
Click to collapse
Try *#2663#, which will update the TS firmware. Used this recently to correct a touch screen reversal (which was a weird experience at first).
zamzenos said:
Try *#2663#, which will update the TS firmware. Used this recently to correct a touch screen reversal (which was a weird experience at first).
Click to expand...
Click to collapse
Sorry. That's the code I used, not 2633. It didn't help at all.
Have you installed any apps that control screen brightness, remove the brightness slider from quick settings? If yes, uninstall and see if that fixes the issue.
Very late to the party but I'm having the same issue. Tried everything and no luck. The left side of screen not responding unless I use the pen. Stock OS no extra apps installed. Gutted.
I also have this problem..after one month use..right side screen doesnt respon..
Im runing on ARA1 firmware
hi pro, did you fix it, i have same issue
I had the right edge screen problem too. You can use *#0*# to test. Select touch to start the test.
Press 'volume up' button once done.
My problem on the right side and only not responsive to touch only. S pen works fine though.
I went to samsung and they said they had replaced the screen. And it works ! So guys, maybe it's really a hardware problem with the display screen.
Now after 2 month, the problem had resurfaced
I really like this phone and my note 4 previously was great and not having any hard problem.
I'm going to send this again to samsung for repair since it's still under warranty. Hope the problem will diasppear and not repeating again once we warranty expires.
Hello, i am having the same problem. It started about a week ago when the left side of my phone became unresponsive to touch. I have to long press the left side of the screen to register my touch. I tried the "Touch" test at *#0*# and the left side cant be touched. Now the lower and right side of the screen became unresponsive too. Anyone knows how to fix? Using Android 8.0.0 on this Samsung Galaxy note FE
exactly happen to me too...
went to samsung center and replace the screen, under warranty
Same Here
Hi
the same issue started happening to my Note FE yesterday.
have you found a way to fix it? or have you returned the product?
BAD NEWS everyone
Hey y'all,
So I have bad news for you.
The problem is hardware not software. I ended up giving my dad the phone when he went on a business trip to Hong Kong. He's got a guy there that owes me a favor or two so he got the screen replaced. That fixed it immediately.
Sorry for not updating you guys. I ended up just picking up a brand new Note8 back in Nov when I had enough of the touchscreen thing. When my dad finally brought me the FE back with the new screen it worked perfectly.
No software changes at all. Just replaced the screen.
Hi !I am having the same problem here with the right side of the screen.
First it started when the right side started to be less sensitive but then after a while it suddenly stopped working for the touch. The S Pen works ok.
Its really terrible to use it like this. At least if there was an option to squeeze the screen. Where did you guys bought the phone? I am in Europe but i think the company imported it from Saudi Arabia. Dont know if its a regional issue but i am courious. I tried clearing the cache and updating the touch but no difference. Haven`t tried factory reset yet....
Radium82 said:
Hi !I am having the same problem here with the right side of the screen.
First it started when the right side started to be less sensitive but then after a while it suddenly stopped working for the touch. The S Pen works ok.
Its really terrible to use it like this. At least if there was an option to squeeze the screen. Where did you guys bought the phone? I am in Europe but i think the company imported it from Saudi Arabia. Dont know if its a regional issue but i am courious. I tried clearing the cache and updating the touch but no difference. Haven`t tried factory reset yet....
Click to expand...
Click to collapse
hi what is your update about your screen problem ? and for how long did you use your note fe before this problem appeared? maybe you dropped it or something?
Hi. I'm having the same issue. I'm in Saudi so maybe it's a region thing?
Right side not working with touch but only for the s-pen. Also now the s-pen or finger has wrong touches in the screen.
nesoor1230 said:
hi what is your update about your screen problem ? and for how long did you use your note fe before this problem appeared? maybe you dropped it or something?
Click to expand...
Click to collapse
I have been using it for about 3 months before it first started to lose its sensitivity and then to not function at all on a 1 cm wide area on the right side. I havent dropped it for this to be an issue and since i already seen other people complaining its definately a manufacturing issue. I have sent it to the service and hope to have an answer and i will update here about it.
---------- Post added at 06:47 PM ---------- Previous post was at 06:45 PM ----------
ahddie said:
Hi. I'm having the same issue. I'm in Saudi so maybe it's a region thing?
Right side not working with touch but only for the s-pen. Also now the s-pen or finger has wrong touches in the screen.
Click to expand...
Click to collapse
My phone is also imported from Saudi Arabia. It could be a problem with this region, i don`t know.
---------- Post added at 06:48 PM ---------- Previous post was at 06:47 PM ----------
ClrDaLane said:
Hey y'all,
So I have bad news for you.
The problem is hardware not software. I ended up giving my dad the phone when he went on a business trip to Hong Kong. He's got a guy there that owes me a favor or two so he got the screen replaced. That fixed it immediately.
Sorry for not updating you guys. I ended up just picking up a brand new Note8 back in Nov when I had enough of the touchscreen thing. When my dad finally brought me the FE back with the new screen it worked perfectly.
No software changes at all. Just replaced the screen.
Click to expand...
Click to collapse
Hello, do you know if your phone was imported from Saudi Arabia? It might be a problem with the phones for this market.
Thanks all for your reply. Really its very scary, just brought a new one from Saudi Arabia, where made in Vietnam. Sometimes I feel some lag with back button . But I dont think its common defect, I heard about same problem in Note 8. Those screen curves brought troubles to all of us ,
I installed tempered glass screen protector but it didn't cover the whole screen , anyway I preferred it rather than the normal elastic one.
Exactly the same issue on my FE
Nope. It happened to me as well just this morning. It is exactly as you've described. I did a factory reset but the issue still persists.

LG G2 can't unlock screen and lag

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?

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