Poco X3 fingerprint sensor replace - Xiaomi Poco X3 NFC Questions & Answers

Hello XDA community, anyone knows if fingerprint sensor can be replaced?
And anyone knows if the sensor is the same as other xiaomi models? I'm asking because I couldn't find it anywhere on web...
Thanks for any help.

Of course it can. What is the issue with it?

robogo1982 said:
Of course it can. What is the issue with it?
Click to expand...
Click to collapse
Thanks a lot for answer.
The sensor not working and not showing up on security screen. Also is FAIL in hardware test.
Also super heating all the time draining all the battery

Zarausto said:
Thanks a lot for answer.
The sensor not working and not showing up on security screen. Also is FAIL in hardware test.
Also super heating all the time draining all the battery
Click to expand...
Click to collapse
I would contact Poco or Xiaomi via their website for this. I'm sure it'll be under warranty if you didn't intentionally break it, considering how new the phone is.

Vulnerability said:
I would contact Poco or Xiaomi via their website for this. I'm sure it'll be under warranty if you didn't intentionally break it, considering how new the phone is.
Click to expand...
Click to collapse
Yep, this is the way to go. Use your warranty, by the look of things I'd say there might be a short circuit somewhere inside.

Return the phone to the place where you have purchased it. Instead of getting the single component replaced, just file for a replacement.

Unfortunately I am in the same situation, fingerprint stopped working after a fall and I had to open the phone and unplug the flex cable (goodbye warranty), impossible to find a replacement part as for now, I looked everywhere

fonz93 said:
Unfortunately I am in the same situation, fingerprint stopped working after a fall and I had to open the phone and unplug the flex cable (goodbye warranty), impossible to find a replacement part as for now, I looked everywhere
Click to expand...
Click to collapse
Thanks for replying, I've asked my friend, which is a mobile phone technical, and he told me that maybe was impossible to do that. So let me know, how do you disconnect only the sensor without the power button, is that simple?
Thanks again!

Zarausto said:
Thanks for replying, I've asked my friend, which is a mobile phone technical, and he told me that maybe was impossible to do that. So let me know, how do you disconnect only the sensor without the power button, is that simple?
Thanks again!
Click to expand...
Click to collapse
Look at the attacched picture, don't mind the red circle, focus on the green one, that's the flex for fingerprint, to access it you have to:
1) remove plastic back cover
2) remove motherboard and camera's cover
If in the future you want to replace the fingerprint sensor it's not hard, I removed it to check the flex cable integrity so I can tell it's easy
WARNING: the motherboard cover screws have seals so if you remove them warranty is gone!

fonz93 said:
Look at the attacched picture, don't mind the red circle, focus on the green one, that's the flex for fingerprint, to access it you have to:
1) remove plastic back cover
2) remove motherboard and camera's cover
If in the future you want to replace the fingerprint sensor it's not hard, I removed it to check the flex cable integrity so I can tell it's easy
WARNING: the motherboard cover screws have seals so if you remove them warranty is gone!
Click to expand...
Click to collapse
Man you are amazing!
Thank you so much, I've already pass that information to my friend (mobile technical).
Thanks! You made my day!

fonz93 said:
Look at the attacched picture, don't mind the red circle, focus on the green one, that's the flex for fingerprint, to access it you have to:
1) remove plastic back cover
2) remove motherboard and camera's cover
If in the future you want to replace the fingerprint sensor it's not hard, I removed it to check the flex cable integrity so I can tell it's easy
WARNING: the motherboard cover screws have seals so if you remove them warranty is gone!
Click to expand...
Click to collapse
Man, sorry to bother you again.
I was talking with my friend (who's gonna open the phone) and he was telling me that he thinks if he removed the GREEN cable the POWER BUTTON will not work, so I'll not be able to turn on screen. Is this true? This cable only disconnect the Fingerprint Sensor? If not, how can he be able to keep POWER BUTTON working and only "disconnect" the sensor (even if he needs to cut some wires on this cable)?
Thanks for any help!

Zarausto said:
Man, sorry to bother you again.
I was talking with my friend (who's gonna open the phone) and he was telling me that he thinks if he removed the GREEN cable the POWER BUTTON will not work, so I'll not be able to turn on screen. Is this true? This cable only disconnect the Fingerprint Sensor? If not, how can he be able to keep POWER BUTTON working and only "disconnect" the sensor (even if he needs to cut some wires on this cable)?
Thanks for any help!
Click to expand...
Click to collapse
The power button uses a different flex cable which is not shown in the picture, don't worry, removing the flex i mentioned will only disable fingerprint scanner, power button will still work as usual

I compared Redmi Note 9 Pro and X3 NFC, fingerprint sensor looks identical (connector, cable and button looks the same) Im going to order sensor from 9 Pro and install it on X3 NFC and will report back if it works. Hopefully it does...
Update: Since there is some code on fingerprint sensor cable, I run that code on Google and from search results I found that this sensor is actually used on both Note 9 Pro and X3 NFC

marko.dnb said:
I compared Redmi Note 9 Pro and X3 NFC, fingerprint sensor looks identical (connector, cable and button looks the same) Im going to order sensor from 9 Pro and install it on X3 NFC and will report back if it works. Hopefully it does...
Update: Since there is some code on fingerprint sensor cable, I run that code on Google and from search results I found that this sensor is actually used on both Note 9 Pro and X3 NFC
Click to expand...
Click to collapse
Interesting, thanks for reporting!

Codes on the flex cable are not identical but are really similar, anyway i tried to order it too (ordered it 2 weeks ago on aliexpress), as soon as i receive it, i will report back.

F3626WL is written on both X3 and 9 Pro
RA1 xxxxxxx is different, that's probably serial number or something like that, so its probably dfferent on every cable. Report if it works if you get it earlier than me.

marko.dnb said:
F3626WL is written on both X3 and 9 Pro
RA1 xxxxxxx is different, that's probably serial number or something like that, so its probably dfferent on every cable. Report if it works if you get it earlier than me.
Click to expand...
Click to collapse
yes, the one that gets it earlier will report back! anyway, how did you break yours?
that's the one i bought: https://it.aliexpress.com/item/1005001631258041.html?spm=a2g0s.9042311.0.0.66d54c4dbgEaKv

fonz93 said:
yes, the one that gets it earlier will report back! anyway, how did you break yours?
that's the one i bought: https://it.aliexpress.com/item/1005001631258041.html?spm=a2g0s.9042311.0.0.66d54c4dbgEaKv
Click to expand...
Click to collapse
Bought from same seller, ordered blue button, I think it will look neater instead of black.
Well, dropped the phone in water, been in water for 15+ minutes. Had to disassemble it immediately and dry it out. While removing back housing, I damaged the cable...Should've been more careful...
Everything major was completely dry lol, but water got inside screen backlight so there were bunch of marks on screen, luckily after drying it out, there are no marks...Even if this phone is just water resistant, it survived fine in bucket of water for 15 minutes.

Thanks everyone for sharing your experiences, I'm still stuck with the fingerprint broken, and I'll wait @marko.dnb and @fonz93 to reply, so I can buy the Redmi Note 9 Pro sensor.
There's a similar experience from another Brazilian which did that replacement with Redmi Note 9 sensor (in this item: https://www.aliexpress.com/item/1005001506489551.html in comments section)
Image translate:
"very good! it was placed on my Poco X3 NFC and it served just right! working perfectly for now! color and fittings all the same! very good! delivery also arrived ahead of schedule! you can sell this button to the Poco X3 NFC because it was right on mine!"

marko.dnb said:
Bought from same seller, ordered blue button, I think it will look neater instead of black.
Well, dropped the phone in water, been in water for 15+ minutes. Had to disassemble it immediately and dry it out. While removing back housing, I damaged the cable...Should've been more careful...
Everything major was completely dry lol, but water got inside screen backlight so there were bunch of marks on screen, luckily after drying it out, there are no marks...Even if this phone is just water resistant, it survived fine in bucket of water for 15 minutes.
Click to expand...
Click to collapse
You were so lucky!!! i broke mine with a fall of 1 meter and fingerprint scanner just stopped working
Zarausto said:
Thanks everyone for sharing your experiences, I'm still stuck with the fingerprint broken, and I'll wait @marko.dnb and @fonz93 to reply, so I can buy the Redmi Note 9 Pro sensor.
There's a similar experience from another Brazilian which did that replacement with Redmi Note 9 sensor (in this item: https://www.aliexpress.com/item/1005001506489551.html in comments section)
View attachment 5269787
Image translate:
"very good! it was placed on my Poco X3 NFC and it served just right! working perfectly for now! color and fittings all the same! very good! delivery also arrived ahead of schedule! you can sell this button to the Poco X3 NFC because it was right on mine!"
Click to expand...
Click to collapse
Well, reading this makes me happy, it's been almost 4 months that i am not using fingerprint, if you're using banking and secured apps you can understand me....i am so tired of typing password/pins every day

Related

Nexus 5 Assembly! hardware problems or what??

So, hello everyone.
I recently Bought two broken nexus 5. One with cracked digitizer (and other minor issues) and another with a perfectly working digitizer/lcd/frame.
I transplanted all the bowels from the smashed screen nexus to the frame of the ok one.
but...when i push/touch more firmly on the back (right side) the phone turn off...
any hints?
Have a closer look at your cable connections and especially at the power button.
ok...but everything seems to be ok.
when i push near the nfc chip...shut off
Did the phone with the smashed screen suffer any impact damage near the nfc chip?
audit13 said:
Did the phone with the smashed screen suffer any impact damage near the nfc chip?
Click to expand...
Click to collapse
who knows.... when I bought it I just turned it on to check whether was working...didn't (foooooooool) check anything else...
None of the internals from the phone with the good screen can be used on the frankenphone?
lol...I have the lcd+digitizer+frame part only...
i'll try to make a video of the problem later today...
pakgio said:
i'll try to make a video of the problem later today...
Click to expand...
Click to collapse
did you check with ifixit for help? They are my goto resource for help and great tutes and vids
here
hth
Zo0
well...I followed the ifixit guide and I have to say it's pretty easy...at least that's what I was thinking before the problem...
Disassembly and reassembly is pretty easy as long as you take your time.
I think there was a pre-existing problem with the phone that had a smashed screen.
yep. that's a possibility. another idea is some kind of issue with the battery. the battery was the only part of the phone that gave me problems during teardown..
believe me I can't believe it.
so I just put 2-3 mm of tape between the motherboard and the back cover on the corner near the front facing camera.
actually it's working (but don't say it too loud...)
When you say right side, do you mean the right side when you are looking at the front of the phone? If you are, then that is where the power button and camera connections are located. Maybe pressing on that area caused a slight short to power off the phone?
I mean, with the rear camera right in front of you, the upper right corner.

Fingerprint module disassembly

Hey guys!
Unfortunately, my Honor 8 battery cover broke a few weeks ago. Now I've received my replacement part.
There are a lot of dissassebly-guides around, but none of them shows how to remove this module from the battery cover.
Can anybody tell me how the fingerprint sensor is connected to the battery cover?
According to this picture it seems that it is fixed just by adhesive:
http://www.myfixguide.com/manual/wp-content/uploads/2016/08/Huawei-Honor-8-Teardown-10.jpg
So I am not sure how easy it will be to get it out (and in again).
Any guide or ideas on that? Maybe anyone of you already had to deal with it.
Thank you.
martlAUT said:
Hey guys!
Unfortunately, my Honor 8 battery cover broke a few weeks ago. Now I've received my replacement part.
There are a lot of dissassebly-guides around, but none of them shows how to remove this module from the battery cover.
Can anybody tell me how the fingerprint sensor is connected to the battery cover?
According to this picture it seems that it is fixed just by adhesive:
http://www.myfixguide.com/manual/wp-content/uploads/2016/08/Huawei-Honor-8-Teardown-10.jpg
So I am not sure how easy it will be to get it out (and in again).
Any guide or ideas on that? Maybe anyone of you already had to deal with it.
Thank you.
Click to expand...
Click to collapse
If you are not sure yourself, better to bring it to service center.
Sent from my Galaxy Tab 3 using XDA Labs
martlAUT said:
Hey guys!
Unfortunately, my Honor 8 battery cover broke a few weeks ago. Now I've received my replacement part.
There are a lot of dissassebly-guides around, but none of them shows how to remove this module from the battery cover.
Can anybody tell me how the fingerprint sensor is connected to the battery cover?
According to this picture it seems that it is fixed just by adhesive:
http://www.myfixguide.com/manual/wp-content/uploads/2016/08/Huawei-Honor-8-Teardown-10.jpg
So I am not sure how easy it will be to get it out (and in again).
Any guide or ideas on that? Maybe anyone of you already had to deal with it.
Thank you.
Click to expand...
Click to collapse
if u r not sure , dont do it ur self , u might brick something . give to pro of service center .
Thank you for your answers.
Well, I understand your advices, but this is not the first device I repair. I have experience in fixing broken displays, ect.
Anyhow, before I start, I always want to get an insight of what to expect. For honor 8 it seems quite easy to remote or change the battery cover, the only uncertain factor is how to swap the fingerprint sensor, because I've never dealed with something like that before.
So I appreciate any information on getting the fingerprint module from one battery cover to the other. If there are high chances to brick it while removing, I would buy a replacement module beforehand just to be save.
Thanks.
martlAUT said:
Thank you for your answers.
Well, I understand your advices, but this is not the first device I repair. I have experience in fixing broken displays, ect.
Anyhow, before I start, I always want to get an insight of what to expect. For honor 8 it seems quite easy to remote or change the battery cover, the only uncertain factor is how to swap the fingerprint sensor, because I've never dealed with something like that before.
So I appreciate any information on getting the fingerprint module from one battery cover to the other. If there are high chances to brick it while removing, I would buy a replacement module beforehand just to be save.
Thanks.
Click to expand...
Click to collapse
Get A small Sharp Blade And take it off it will come of then re-use it into the new back cover .
Send to repair center, you don't want to break it even more

major problem

Hi, I have a Google pixel which i had for Xmas, And been working flawless since day 1. Problem now is that every time i open the camera app i get this error. Neither cameras work from the main camera app. WhatsApp cameras work but only front camera, When trying to switch between them in WhatsApp the camera freezes up. Has anybody else encountered this problem ?
Thanks
https://productforums.google.com/forum/#!topic/phone-by-google/FWjBDdTJvEg;context-place=topicsearchin/phone-by-google/category$3Acamera%7Csort:relevance%7Cspell:false
mtoomey79 said:
https://productforums.google.com/fo...-place=topicsearchin/phone-by-google/category$3Acamera%7Csort:relevance%7Cspell:false
Click to expand...
Click to collapse
Thanks for the reply, followed those instructions and nothing.
Try reaching out to Support (from within the phone)? They should offer some help.
Or, see if there's any service test menu available for the pixel? (Google search not helpful, I'm afraid).
kartnite said:
Try reaching out to Support (from within the phone)? They should offer some help.
Or, see if there's any service test menu available for the pixel? (Google search not helpful, I'm afraid).
Click to expand...
Click to collapse
Spoke to support they said they was going to send out replacement details in post etc, Followed to tell them my screen had a slight crack in ( Just glass ) which apparently voids all warranty ?
Oh fudge... And I suppose there's no insurance to fall back on.
This is annoying.
No luck with the service test codes?
Tried factory reset?
Don't tell them it these things (slightly cracked screen).
milan187 said:
Tried factory reset?
Don't tell them it these things (slightly cracked screen).
Click to expand...
Click to collapse
Yeah tried everything still can't get it to work,
Is there any sensors on the front of the screen that could be affecting the cameras function at all? I can replace the screen but it's no good if my camera won't work.
ykdr-scott said:
Yeah tried everything still can't get it to work,
Is there any sensors on the front of the screen that could be affecting the cameras function at all? I can replace the screen but it's no good if my camera won't work.
Click to expand...
Click to collapse
Have you asked google if they will honor the warranty if you have the screen replaced? They were willing to do that for me when I came across my microphone issue, so that may be an option for you.
exad said:
Have you asked google if they will honor the warranty if you have the screen replaced? They were willing to do that for me when I came across my microphone issue, so that may be an option for you.
Click to expand...
Click to collapse
Maybe I can ask them,But doesn't it voids warranty if the screen is replaced by my self?
ykdr-scott said:
Maybe I can ask them,But doesn't it voids warranty if the screen is replaced by my self?
Click to expand...
Click to collapse
Yes likely it would, paying to replace it and have a fully working phone would be better than replacing your screen yourself and still having issues no?
I was going to say spend fifteen bucks and grab a camera from ebay, would be a cheap and easy possible fix, but I can only find one camera online and they want $90 for it. pfft. My next suggestion would be to take it apart and disconnect/reconnect the camera(s). Last Resort of course, but it sounds like you might be there already. You can nuke a ziplock bag of water to soften the glue tape around the screen. And get a micro torx set from whatever your walmart equivalent is (you will want at least two torx t5 bits) Teardown vids all over youtube.
phermey said:
I was going to say spend fifteen bucks and grab a camera from ebay, would be a cheap and easy possible fix, but I can only find one camera online and they want $90 for it. pfft. My next suggestion would be to take it apart and disconnect/reconnect the camera(s). Last Resort of course, but it sounds like you might be there already. You can nuke a ziplock bag of water to soften the glue tape around the screen. And get a micro torx set from whatever your walmart equivalent is (you will want at least two torx t5 bits) Teardown vids all over youtube.
Click to expand...
Click to collapse
Thanks for the reply, Can't take my screen out as it would literally fall apart from the top right now. Just don't see how this could effect the rear camera when the front one is inside the screen damage area, And front cam also works on third party apps just not the rear one.
Was going to unlock the bootloader and reflash the ROM but as it's on 7.1.2 it's impossible right now so it's just a matter of replacing the screen then cleaning/ reconnecting the camera

Fingerprint sensor durability

Hi guys, I've just purchased a 6x to replace my broken LG G3 and i'm loving it!
However, moving from the G3 with the lock button on the rear, I keep pressing the 6x fingerprint scanner as if it's a button, before realising it isn't. Must be muscle memory!
Could this damage or break the sensor? Or is it pretty durable?
Thanks
liamaustin7v said:
Hi guys, I've just purchased a 6x to replace my broken LG G3 and i'm loving it!
However, moving from the G3 with the lock button on the rear, I keep pressing the 6x fingerprint scanner as if it's a button, before realising it isn't. Must be muscle memory!
Could this damage or break the sensor? Or is it pretty durable?
Thanks
Click to expand...
Click to collapse
I don't think it will break it. But just don't drop it. I dropped my 6x once and fingerprint was deaddd... Completely disappeared from settings. Had to send my phone for repair. Of course warranty covered and replaced the whole back panel. Idk if it is just me but I don't find its build quality very promising..
AHSAN044 said:
I don't think it will break it. But just don't drop it. I dropped my 6x once and fingerprint was deaddd... Completely disappeared from settings. Had to send my phone for repair. Of course warranty covered and replaced the whole back panel. Idk if it is just me but I don't find its build quality very promising..
Click to expand...
Click to collapse
That's not good! Were you using a case at the time? How were Hauwei with repairing it?
liamaustin7v said:
That's not good! Were you using a case at the time? How were Hauwei with repairing it?
Click to expand...
Click to collapse
Well actually I gave my phone to retailer with warranty card and he then sent it to repairs. Got it back after a week.
About case, I was using the one that come within the box.
AHSAN044 said:
Well actually I gave my phone to retailer with warranty card and he then sent it to repairs. Got it back after a week.
About case, I was using the one that come within the box.
Click to expand...
Click to collapse
At least it was repaired quickly! Was it a big drop or not? I've dropped mine about a foot onto a desk, but there's no noticeable damage so far.
Fingerprint connection came out when you dropped the phone. I've seen a disassembled honor 6x and I feel thats pretty much why it happened.

Touch screen stoped working

So I droped the phone into water. And you should always turn off the device and let it dry. The problem was that the phone turned on and off itself. 2 days later when I have let it dry, I can start the phone. There is a bit of misscoloring on the screen. But when I try to enter my password, it doesn't recognize my finger. One time the screen changed like it was recognising a finger but that was only for a split second. Do you think the chip is dead? Can I remote control it somehow? I have rooted and have twrp installed. Thanks for answers
From what you say, it's damaged from water, one thing you can do is to buy a replacement for the FP sensor.
Still, wait a couple of days, it may begin to work properly again.
PalakMi said:
From what you say, it's damaged from water, one thing you can do is to buy a replacement for the FP sensor.
Still, wait a couple of days, it may begin to work properly again.
Click to expand...
Click to collapse
Where do one buy a FP sensor?
MasadanThe said:
Where do one buy a FP sensor?
Click to expand...
Click to collapse
eBay, or something. Just type honor 8 fingerprint sensor. Buy you must teardown your phone like that.
MasadanThe said:
Where do one buy a FP sensor?
Click to expand...
Click to collapse
There are many websites, like the one mentioned in the previous post.
However, I advise you to take to a repairman to replace it (if you don't have experience with this sort of things)
PalakMi said:
There are many websites, like the one mentioned in the previous post.
However, I advise you to take to a repairman to replace it (if you don't have experience with this sort of things)
Click to expand...
Click to collapse
I don't really understand what the fingerprint sensor have to do with the touch function on the screen.
MasadanThe said:
I don't really understand what the fingerprint sensor have to do with the touch function on the screen.
Click to expand...
Click to collapse
It's my bad, when you said the chip and finger in the same sentence, I didn't see the screen part.
I apologise, my bad.

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