[FIX] [REPAIR] XIAOMI Redmi Note 7 Proximity Sensor fix after screen replacement - Xiaomi Redmi Note 7 Guides, News, & Discussion

So i replaced the screen glass and digitizer and watched a few YouTube videos of the teardown of the redmi note 7 and soon realized my proximity sensor didnt work after i changed the screen and screen frame . Upon further investigation i noticed most of the youtube videos DID NOT point out some of the extra hardware that needed to be changed as well and as a result my proximity sensor did not work. So if you have previously replaced parts on or repaired your XIAOMI REDMI NOTE 7 and notice a few things arent working here are few things that you may have forgotten to swap and replace. After i swapped the pieces over my proximity sensor worked again. Note that the blue tape is there to PREVENT DUST from hitting the sensor and glass, so only remove the tape when you are ready to replace.

I was wondering after the screen replacement, how is the latency on the edge of the screens? Can you compare it please? My phone is brand new but because of this latency i want to replace the screen and digitizer with non official one.

Hi. I'm exactly in this case. where did you buy the the extra hardware that needed to be changed?

Related

[Q] Proximity sensor issue with tempered glass

I got a new tempered glass screen protector, however, it is covering the proximity sensor located directly to the left of the top speaker. Since it is covering the sensor, I am unable to access the dial screen during calls 9 out of 10 times unless i keep swiping my finger on top of the sensor to get it to work. I got AndroSensor to test out the sensor and it does stay at 0.0in 90% of the time. When it does work, the value returned is 2.0in. I really don't want to replace this screen protector because it is nice and love the smoothness of it but unable to use the keypad during calls is too much.
Is there a way to manually turn on the dial screen during calls? Tried swiping, pinching, you name it.
Is there a hidden setting I could try like entering *#0*# on some phones for a workaround solution?
Is there a way to modify the settings of the proximity sensor? I am rooted.
The weird thing is there is a cutout on the protector but it is on the right side... Most of the pictures I saw of tempered glass for Nexus 6 had the left side covered but right side cut out as well. What's on the right side that is more important than the proximity sensor? Did they not know? Blah sorry for rant...
Its a problem with your tempered glass, contact the company whom you bought it from. Request a defect.
Theres a tempered glass thread in the accessories section where they have the same problem depending on what tempered glass you purchased.
Thanks zephiK, I'll check out that thread!
The below mentioned fix is for brand new Nexus 6.
Did you try going to settings , accessibility , power button ends call, toggle that on and off.
After completing the above mentioned step. Reboot your phone and try making a call. I hope the issue get resolved.
I tried this step on an unrooted phone, which was recieved just yesterday.
I got this fix from some other thread.

Proximity sensor/screen issue during calls?

I am running the latest a stock debloated 6.0 rom from tupac4u right now and having some issue during phone calls. For me I make or receive a call and my display will turn off even before putting the phone to my face. However, getting the screen on during a call is a bit hard to do as pressing the power button doesn't turn the screen on(sometimes have to press it 3 times to get it on). Anyway to fix this, or to disable this? Thank you
Using a screen protector? If yes, it may be blocking the proximity sensor, which is located just to the left of the top speaker grill.
In another thread I'm being told it's a bug with marshmallow. How accurate is that? And yes I am using a screen protector. I'm just not sure where the proximity sensor is so I can adjust accordingly?
http://forum.xda-developers.com/nexus-6/development/mod-fix-proximity-sensor-5-1-rom-t3069031
https://productforums.google.com/forum/#!category-topic/nexus/nexus-6/mIRwBP4Hx_Y
I do not use shell or film and have the problem for a long time. Tried everything but nothing helps you get used to it.
Knowing isuses since 5.1 and the sensor is on the top left of the earpiece
Yeah i took a light to find where it was. I have a tempered protector. Tried to use a knife to adjust it, but broke the screen protector. Oh well I'll just skip one cup of tea this week. If I go with a regular screen protector(one of those cheap $1 ones will that still cause issues?
Yup, the oversensitive proximity sensor issue started after 5.1 arrived. I too had a tempered glass covering the proximity sensor and it was working fine when I was on 5.0/5.0.2. I had to remove the tempered glass and get a new one which doesn't cover proximity sensor to fix this problem.
Did the same thing. Got a regular screen protector right now for a cheap, until I can find a tempered model that doesn't cover the proximity sensor.

Correct way to turn off proximity sensor

I'm visiting my parents and my mother's Z3 Compact has issue that screen goes black when call is made. It turned out proximity sensor reports always active on state. It seems to work when I push the top-left part of screen but I have no experience with fixing HW issues so I don't want to open the phone.
Instead I would be happy if it was possible to disable the proximity sensor altogether for now. Phone is bought as used and it seems to have bootloader unlocked so it wouldn't probably be a big deal to root it if that would help with fixing the issue. Any suggestions what to do? I tried some programs like Proximity Screen Off Lite which some people mentioned had done it for them but it seemed not to help me with this issue.
Hi. Proximity issue is result of peeling off screen from frame. Just take some epoxy glue and apply a little to the gab in the corner between frame and screen. Just watch out to not apply glue on proximity sensor, but only on the frame. After that take some clip to press it and left it for 24 hours to make sure glue get dry. Thats all. Of course You can also take apart whole phone and change whole glue adhesive under the screen but this one is quite harder than just apply some glue in gap between screen and frame.

[Guide] Replacing a broken fingerprint sensor

This post is just for reference, in case anyone needs pictures of original parts and a small guide on how to replace the fingerprint sensor.
This video (not mine) shows the process as well, on a Redmi 4 (non-X), except you don't need a screwdriver for the 4X. And there's no fp sensor test in the 4X MIUI engineer test app.
I recently bought a Redmi 4X with a faulty fingerprint sensor.
I noticed in both MIUI11 and LineageOS:
- I was not asked to add a fingerprint during initial setup
- There are no fingerprint settings for lockscreen security (only PIN, pattern, swipe). If you try to search in settings for "finger" and tap on the result, the page will be empty/blank.
I tried some software tricks like deleting files, but that did not help here. On the phone itself, the fp sensor had a tiny dent/hole in it (can be seen on the pictures), less than 1mm in size, which revealed a bit of silver colour under the black surface. Looks like it hit some sharp object. I'm not entirely sure if that caused it to fail though.
So I bought a replacement (less than $10, pictures attached). After opening the phone with plastic tools, removing the old fp sensor ribbon cable from the motherboard, just push the old sensor out of the case through the hole with moderate force. It is glued in place with some sort of foam, clean it off with some tweezers and isoprop alcohol. I installed the new sensor with some B-7000 glue (if you make any mistakes with B-7000, just wipe it off before it dries with a qtip and isoprop alcohol and try again).
My replacement seems to be the common one sold on Aliexpress and elsewhere, it works fine and appears to be fpc (persist.sys.fp.goodix is 0).
Text on original Xiaomi fp sensor ribbon cable (ribbon cable has a black colour):
F3208FD RA0
F 171501
Text on replacement (ribbon cable has copper/bronze colour):
[icon]-film 0251-00 V4HX-1718

Disabling Proximity sensor - Nokia 7 plus

Hi All,
I am using Nokia 7 plus for past 2 years. Andorid 10 with Nov security patch. Recently, my proximity sensor stopped working and I am not able to use phone any more (due to black screen during calls). I even root my phone and installed edxposed framework for disabling proximity sensor but no luck. Even sensor disabler not working for me. Any suggestions would be much helpful as I want to use this phone badly
I have same problem (stop working after lcd replace), try more solution, but at end i find one "working"... In Developer options enable QuckSettingsDeveloperTiles/SensorOff, this add Sensor tile to top pulldown QuckSettings menu, before call must you manually enable it, after call disable (because sensor off disable all sensors and also camera ;-)
k3dar7 said:
I have same problem (stop working after lcd replace), try more solution, but at end i find one "working"... In Developer options enable QuckSettingsDeveloperTiles/SensorOff, this add Sensor tile to top pulldown QuckSettings menu, before call must you manually enable it, after call disable (because sensor off disable all sensors and also camera ;-)
Click to expand...
Click to collapse
Yeah, I have been using it. Problematic when attending calls in Skype which wont work unless you switch again. Thanks anyway
In my experience, proximity sensors don't stop working, they just work all the time! Often there's a small rubber gasket which separates the UV LED from the sensor. Can be lost when replacing a screen - I did this myself on a Moto G. Screen would go black in a call and couldn't be unlocked. I found the gasket on the floor, replaced it and this fixed the problem. Replaced the screen on a Nokia 7 Plus recently, same problem. I couldn't find a missing gasket this time, but glued a small piece of rubber between sensor and LED and this fixed the issue. Had to experiment with the size of the rubber piece to get it working properly. I think some of the UV light bounces off the back of the screen and is picked up by the sensor , if this piece is missing. My $0.02 worth...
Guys, I am frustrated with proximity sensor of my Nokia 7 Plus, as soon as I call, screen goes black.
I could stop it by enabling Developer Mode and disabling sensors, but this disables all sensors not proximity, and my camera stopped working.
Can I just remove it from mother board? any way to disable only proximity sensor?
Thanks in advance.
MrNams said:
Guys, I am frustrated with proximity sensor of my Nokia 7 Plus, as soon as I call, screen goes black.
I could stop it by enabling Developer Mode and disabling sensors, but this disables all sensors not proximity, and my camera stopped working.
Can I just remove it from mother board? any way to disable only proximity sensor?
Thanks in advance.
Click to expand...
Click to collapse
If you've had the screen replaced, I think the rubber gasket separating the IR LED and sensor has been lost. Seems to be a common cause of this kind of problem. Cheers
Gastrocnemius said:
If you've had the screen replaced, I think the rubber gasket separating the IR LED and sensor has been lost. Seems to be a common cause of this kind of problem. Cheers
Click to expand...
Click to collapse
Many thanks for quick reply.
Yes, I replaced screen. I don't remember about rubber gasket, but now i have to open scree and fix it.
Can we just remove proximity sensor from board? What functions get affected?
MrNams said:
Many thanks for quick reply.
Yes, I replaced screen. I don't remember about rubber gasket, but now i have to open scree and fix it.
Can we just remove proximity sensor from board? What functions get affected?
Click to expand...
Click to collapse
I guess just the screen turning off during a call. But removing it may damage some other component, I guess. I also wonder if the screen stays off or on permanently if the sensor is removed. If you're taking the screen off anyway you could just try my fix of glueing a small piece of plastic or rubber between the sender and receiver, has worked for me and is still working. But this is just my opinion, all the best in whatever you decide to do. Cheers
Gastrocnemius said:
If you've had the screen replaced, I think the rubber gasket separating the IR LED and sensor has been lost. Seems to be a common cause of this kind of problem. Cheers
Click to expand...
Click to collapse
Yes, I replaced screen. I don't remember about rubber gasket, but now i have to open scree and fix it.
Can we just remove proximity sensor from board? What functions get affected?
Gastrocnemius said:
I guess just the screen turning off during a call. But removing it may damage some other component, I guess. I also wonder if the screen stays off or on permanently if the sensor is removed. If you're taking the screen off anyway you could just try my fix of glueing a small piece of plastic or rubber between the sender and receiver, has worked for me and is still working. But this is just my opinion, all the best in whatever you decide to do. Cheers
Click to expand...
Click to collapse
Ok Thanks, I shall try it.
One more question
Is there a way to disable only proximity sensor through OS/App? This will save my effort to remove it from board and possible damage to board.
Am working on another 7 Plus which has the gasket fitted to the proximity sensor and took some pictures so y'all can see what I'm talking about. First picture is of the gasket, second is the sensor without the gasket. Cheers
Just checked in to this forum for give Gastrocnemius a big "Thank you"!
We have a Nokia 7 Plus with the "normal" USB connection issue.
Send to repair to an independent repair station (so not Nokia), who offered a good price.
When it came back it looked fine, charging and fast charging was possible, we have been happy.
Until the first call... Black screen with dialing.
A short search showed: many problems after an update, looked like software related issue with no solution.
Shortly after the new USB connection was faulty again.
So the phone went into a drawer and replaced with a new Nokia.
Now my old Redmi 4 is too old and some for me important apps will not work with the "old" android.
I remembered the Nokia 7 plus and started to repair the USB board, also as a trial if i can handle mobile phone repairs for myself. Well, cheap USB board found, change successful... not! Broke the Display (stayed black after assembly, board from display got hot, probably cable broken).
Ok next step, new display, screen works and and charging repaired on first view.
Function check: black screen during call. Tried several proximity fix tools without success.
The app Phone Check clearly identifies as proximity sensor as "close" / near, no change.
The change to far came only when the display was way to the side. So, the sensor is working, but the function close far is not working.
After weeks I discovered this fred! Gasket? Which gasket! There is no gasket! Check with several videos on YT, yes, gasket identified!
So I tried the mentioned fix rubber band but was not able to get it working.
Then I looked for a gasket online and found one available for the Nokia 2 / TA 1007 on EBAY for a couple of Euros and ordered it for giving it a try.
I just assembled the gasket.... the 7 plus no works like new!
So I'm assuming that during the first USB-board change the gasket got lost and the check by the repair company was only performed for the charging and no more checks for the rest or they didn't care (ASUMING!)
Long story short:
If the gasket is missing you can use the one from the TA-1007!
It does look a little bit different than the above gasket but mine worked. No further assembly from the phone is required, just slip it over the sensor (make sure that the big hole is left, seen as microphone is up and sensor is up left [don't know how to describe better]).
Thanks again for the hind to the missing gasket.
Best regards from Munich,
Thorsten
(typos corrected)
Blackboie said:
Just checked in to this forum for give Gastrocnemius a big "Thank you"!
We have a Nokia 7 Plus with the "normal" USB connection issue.
Send to repair to an idependent repair station (so not Nokia), who offered a good price.
When it came back it looked fine, charging and fast charing was possible, we have been happy.
Until the first call... Black screen with dialing.
A short search showed: many problems after an update, looked like softwrae related issue with no sollution.
Shortly after the new USB connection was faulty again.
So the phone went into a drawer and replaced with a new Nokia.
Now my old redmi 4 is to old and some important apps wil not work with the "old" android.
I remembered the Nokia 7 plus and started to repair the USB board, also as a trial if i can handle mobile phone repairs for myself. Well, cheap USB board found, change sucsessful... not! Broke the Display (stayed black after assembly, board from display got hot, probably cable broken).
Ok next step, new display, yes, phone and charging repaired.
Funktion check: black screen during call. Tried proximity fix tools without sucess.
The app Phone Check clearly identifies as proximity sensor as "close" / near, no change.
The change to far came when the display was way to the side. So the sensor is working, but the function close far is not working.
After weeks I discovered this fred! Gasket? Which gasket! There is no gasket! Check with several videos on YT, yes, gasket identified!
So I tried the mentioned fix rubber band but was not able to get it working.
Than I looked for a gasket online and found one available for the Nokia 2 / TA 1007 on EBAY for a couple of Euros and orderet it for giving it a try.
I just assembled the gasket.... the 7 plus no works like new!
So I'm assuming that during the first USB-board change the gasket got lost and the check by the repair company was only performed for the charging and no more checks for the rest or they didn't care (ASUMING!)
Long story short:
If the gasket is missing you can use the one from the TA-1007!
It does look a little bit different than the above gasket but mine worked. No further assembly from the phone is required, just slip it over the sensor (make sure that the big hole is left, seen as microphone is up and sensor is up left [don't know how to discribe better]).
Thanks again for the hind to the missing gasket.
Best regards from Munich,
Thorsten
Click to expand...
Click to collapse
Glad to hear it worked for you Thorsten!

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