I got my Mi Mix from China/HK (not sure which) from NIS-store in November. The phone has been glorious with the exception of the fingerprint reader.
I enter my fingerprint, one finger, whether once or multiple times, the result is the same. Immediately afterwards it reads well, a couple of hours later it's hit and miss. Half a day later it will not read my fingerprint at all. I've flashed every ROM, BL unlocked, installed TWRP, rooted and installed EU ROM. Cleared cache, davik and user data. I used water and a soft cloth to wipe the fingerprint reader and washed my hands until they're raw.
To compare, I recently bought the US version of the Huawei Mate 9. This phone has lots of problems and is going back, but the fingerprint reader is 99% accurate.
1) Anyone else have this issue and how have you addressed? (I contacted the seller who supposedly, by default, offer a one year warrantly. I am dubious.
2) Anyone know of a repair shop, US or China/HK that might be able to repair this?
Any input is appreciated.
audscott said:
I got my Mi Mix from China/HK (not sure which) from NIS-store in November. The phone has been glorious with the exception of the fingerprint reader.
I enter my fingerprint, one finger, whether once or multiple times, the result is the same. Immediately afterwards it reads well, a couple of hours later it's hit and miss. Half a day later it will not read my fingerprint at all. I've flashed every ROM, BL unlocked, installed TWRP, rooted and installed EU ROM. Cleared cache, davik and user data. I used water and a soft cloth to wipe the fingerprint reader and washed my hands until they're raw.
To compare, I recently bought the US version of the Huawei Mate 9. This phone has lots of problems and is going back, but the fingerprint reader is 99% accurate.
1) Anyone else have this issue and how have you addressed? (I contacted the seller who supposedly, by default, offer a one year warrantly. I am dubious.
2) Anyone know of a repair shop, US or China/HK that might be able to repair this?
Any input is appreciated.
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Click to collapse
Have you been facing this issue since November or have you just noticed this recently?
Before you send it out for repair, have u tried registering multiple fingers other than just your index fingers?
Can you also ask a friend or someone close, to try the fingerprint sensor. This is very unlikely, but I've heard that some fingerprint sensors aren't capable of scanning every type of fingerprint. While some people have very clear pattern\ridges on their fingerprints, it may be faint for others.
This is why I am suggesting that you ask a friend to test the sensor. This way you can make sure that it is the sensor itself which is defective.
I appreciate your response.
This has been ongoing since I received the device. I've never been able to, reliably, use the fingerprint scanner and count on activating my phone without the real possibility of having to use my pin.
The Mate 9 is the only fingerprint reader that has consistently worked. My note (4 or 5?) just wouldn't do the job and my V20 is just flaky (I guess I'm the flaky one, with so many phones).
I'll start out, renewed, with other fingers, then, if nt successful, get my wife to try the fingerprint reader.
Anyone else have additional suggestions, or email of a repair shop?
audscott said:
I appreciate your response.
This has been ongoing since I received the device. I've never been able to, reliably, use the fingerprint scanner and count on activating my phone without the real possibility of having to use my pin.
The Mate 9 is the only fingerprint reader that has consistently worked. My note (4 or 5?) just wouldn't do the job and my V20 is just flaky (I guess I'm the flaky one, with so many phones).
I'll start out, renewed, with other fingers, then, if nt successful, get my wife to try the fingerprint reader.
Anyone else have additional suggestions, or email of a repair shop?
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Click to collapse
From what you say, it looks like the pattern of your fingerprint may be faint or hard to read compared to others. Because the other phones you mentioned like the Note 5 and V20 have really good fingerprint sensors. The Note 4 had a slow swipe-type sensor, so that has been a pain for me as well.
And the Mate 9 may have an excellent sensor or maybe its just the material on the surface of the Mate 9's sensor. Some glass sensors tend to attract even the slightest of moisture or sweat. I've noticed that the sensor of the Mix does this.
See if your partner's fingerprints work fine with the device. In that case, you can rule out that its a defective sensor.
And regarding repairs, I haven't seen any actual spares for the Mix due to the limited production of the device. So I doubt you'll find any repair shops that has parts to service the Mix.
Your best bet would be to send it to the seller for warranty.
Just so anyone interested will know, it's my faulty right index finger. After nearly 8 hrs using my left index finger and not a singe missed scan. I don't know what to think, except thanks to satishp for the insight and supportive words.
I had a problem in which my sensor crashed. I thought it was a hardware problem but a factory reset completely fixed the problem for me. If your device has ongoing issues across multiple ROMs, it is most likely a hardware caused issue.
audscott said:
Just so anyone interested will know, it's my faulty right index finger. After nearly 8 hrs using my left index finger and not a singe missed scan. I don't know what to think, except thanks to satishp for the insight and supportive words.
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Click to collapse
Glad that I could be of help. Its good to know that the sensor isn't defective and you don't have to send it for warranty anymore. It would have been a hassle to ship your phone to China and not knowing when\if the seller would send it back.
Cheers!
The mod for this function did not disable it for me
Related
Hello,
Recently I have been having issues where my Note 9 would randomly restart every 5-10 when left on standby. It never happens when the screen is on. I've tried safe mode and a factory reset to no avail. Finally, I switched my screen lock type to pin, and poof. Problem gone. Tested multiple times and the fingerprint sensor is definitely the culprit. Any reason why this is happening? So odd...
Faulty hardware possibly. Factory reset to exclude software as the cause and if not return to Samsung for repair
raul6 said:
Faulty hardware possibly. Factory reset to exclude software as the cause and if not return to Samsung for repair
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Click to collapse
xda members should be getting a portion of Samsung support employees' salary for doing part of their job for them.
I had the same issue this last week. Safe mode testing and restarts. Cache wipe and restarts again. Factory reset and good for two days. Put fingerprint back and 2 hours later I'm back on the reboot loop and after a day of Google I came across this post. Disabling stopped me from throwing the phone across the room today. This is weird, but disabling fingerprint unlock fixed my problem.
note 9 bootloop because of fingerprint scanner
I was constantly in a bootloop when screen would shut down. I tried every suggestion from, wiping cache, hard reset, safe mode, etc.... I diabled my fingerprint scanner and have not had any rebooting at all, my phone is under warranty and they are sending me a new one. Kind of upset about getting a new phone, but i will get over it. I contacted at&t and informed them of the problem and the resolution and the fellow on the line was very happy that i brought this to their attention. I hope i can help someone with the same problem.
MTTHEW
Issue fixed - DIY
To all who see this, I also had this same issue. And I fixed it in just less than an hour.
The fingerprint scanner on the Note9's and S9's do seem to not like moisture. I powered my Note9 off, and rested it on it's screen on a flat surface.
I then took 99% rubbing alcohol and a Q-Tip and poured drip-sized amounts of alchohol on the Fingerprint sensor. I wanted to make sure the fingerprint sensor was neatly dressed in the alchohol and allow the alchohol to dry there.
Waited about 15 to 20 minutes and then powered the phone on. Set the fingerprint scanner to unlock the phone, and tested this 3 days before posting here. I no longer get random reboots.
Issue fixed.
If you try this yourself, make sure you use 99% alchohol. 70% has water mixed in which the sensor may clearly not like if the issue is really moisture getting in the sensor.
I tried this after seeing another user in another forum claim that he used rice to fix his sensor rebooting issue. Rice works but it takes longer.
Do this at your own risk. Good luck.
I am having the EXACT issue here. Random reboots/power off when the phone is on Standby. I disabled the fingerprint unlock and the problem is gone. That's the culprit for sure. Safemode, nothing works. I types *#0*# in phone dialer and tested the fingerprint sensor. Everything passes except for a test item called RESET and the test shows FAIL. So this is definitely a hardware problem. I am trying the alcohol fix now to see if it works. I have never submerged the phone but I have wiped it with a very damp towel for quite a few times because it is supposed to be IP67 water proof. This should be Samsung's problem. If this does not work I guess I will have to send it in for warranty repair.
GreenBot said:
I am having the EXACT issue here. Random reboots/power off when the phone is on Standby. I disabled the fingerprint unlock and the problem is gone. That's the culprit for sure. Safemode, nothing works. I types *#0*# in phone dialer and tested the fingerprint sensor. Everything passes except for a test item called RESET and the test shows FAIL. So this is definitely a hardware problem. I am trying the alcohol fix now to see if it works. I have never submerged the phone but I have wiped it with a very damp towel for quite a few times because it is supposed to be IP67 water proof. This should be Samsung's problem. If this does not work I guess I will have to send it in for warranty repair.
Click to expand...
Click to collapse
SO I tried the alcohol solution. It did not work right away. The test still showed a FAIL and the phone would still reboot randomly while on standby. BUT IT WORKED THE MORNING AFTER! I am not sure if it just took it's time to dry. But I had cleaned the sensor with damp cloth before and it never had this rebooting issue. Well I guess this solution works. Definitely worth a try.
Thanks!
I had to eventually get my fingerprint sensor replaced for mine to work. They're only $15 on amazon. I recommend looking into repairing it yourself if you can. You would need an embossing heat gun, a ring suction cup, and some nylon picks to help hold it open. You can usually buy a decent kit for <$10 (- the heat gun). Also be prepared to ruin a deck of cards or purchase a metal phone opening tool. I like using cards because they're thin enough to get underneath the back plate, but thick enough to leave a gap to get my nylon picks in place. They also don't damage the shell like the metal opening tools can. The fingerprint sensor is probably one of the easiest repairs you can do, and the worst that could happen is that you break the back plate of your phone, which buying a new backplate+sensor is still cheaper than sending it in for repairs. You can buy some B7000 adhesive to put the backplate back on. Or just reheat the old adhesive that's already on there. Just be careful with it around water once you do this. Repairing your phone breaks the seal that was on there, so it's not as waterproof as it once was.
Hi all,
I bought this tablet barely a week ago for the purpose of note taking at college. It worked flawlessly at first but in the last few days either the digitizer or software (i assume) started malfunctioning after prolonged usage of M-Pen lite stylus that came packaged with it, I mean it's not even that long it happens usually after 1hr - 1.5hrs of constant pen writing. HOWEVER even though the screen refuses to recognize pen input once that happens, it still DOES work if I tap my finger or decide to "write" or "draw" with my finger so I'm guessing it has something to do with software side of things.
I've heard of this happening on Surface 3 and that's a far more superior and much more expensive product than this.
Who can I contact about this issue? Does HiCare support offer any useful features that I could use there or over their live support? You guys reckon they'd even know what I'm talking about.
Has anyone else experienced this and were you able to fix it? I can't be bothered to go restarting my tablet every time it decides to malfunction because I have things to write down.
Please I'm desperate :crying::crying:
Hello. Since few weeks I have extreme problem with ghost touch issue on Just top of the screen where the notifications are. I've turned on the programist options in order to see where it happens.
It looks like multiple ghost touch on the top edge on hole width. Sometimes the area respond to my touch, but most of the Time does not.
Happens random, case or screen protector is not the problem, tried all the options.
I have found some solutions from pocophone, but neither of them works.
Disabling gestures, miui optimalization, screenshot gestures, non.
Tried factory reset, updating to miui 11, nothing improved. After factory reset no problem for 1 day, not sure if there is a correlation.
I Will try to record the problem when it Will happen again.
Do you have any advice? I have warranty but at this moment would like to try all avaible solutions. Thanks in advance.
EDIT
Here is my video how it looks
https://photos.app.goo.gl/qnSkPZ6UwYVqsYY88
ooooh man, finally someone with the same problem, and cant find why its happening
it happens randomly, but when its happening the only way i can stop it is tighting it as if choking it. i dont want to send it to warranty.....
Well I am going to send it to warranty next week. I dont like the fact that I Will he without the Phone for a month, but hope they Will change the screen and it Will be fine.
My first xiaomi, always had Samsung and everything was alright. Phone in overal is great but I am very disappointed with this issue.
mist813 said:
Well I am going to send it to warranty next week. I dont like the fact that I Will he without the Phone for a month, but hope they Will change the screen and it Will be fine.
My first xiaomi, always had Samsung and everything was alright. Phone in overal is great but I am very disappointed with this issue.
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Im the same, just noticed, after 2 days without issues that i was recording a telegram audio and it happend, idk its kinda clueless always
Man, definetly it has something to do with software, just a few moments before posting this i had the issue and it didnt want to leave so i had to restart the phone, first time this way.
Guys I found out what's causing the issue!!! It's not software or hardware. If you have the original Xiaomi case that comes with the phone it causes the ghost touches! I tried removing it 2 times and each time I put it on I experience the ghost touches and each time I remove it they stop for 1+ day which means that the case is causing them. My guess is that tiny particles are stuck between the case and the phone making it do this.
had this on my previous phone, had to rma it
Shpagata said:
Guys I found out what's causing the issue!!! It's not software or hardware. If you have the original Xiaomi case that comes with the phone it causes the ghost touches! I tried removing it 2 times and each time I put it on I experience the ghost touches and each time I remove it they stop for 1+ day which means that the case is causing them. My guess is that tiny particles are stuck between the case and the phone making it do this.
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Click to collapse
Just found i had a spigen clear case(bulky) and since i got back to Xiaomi's case it is happening a lot less than before.
My problem happens even without the case, and I used Nillkin Nature. Phone is in service currently. When it gets back I will tell you
Lol, how can this be? I believe you, though.
But oem case doesn't even touch the screen properly.
Sent from my Mi 9T Pro using Tapatalk
Phone sent to Service. After two weeks it is coming back to me with replaced screen. In about two days I will check if everything is fine.
Im waiting for what u have to say man, cuz i tried to rma it but they have it under review since last friday and today its being so ****ing annoyng that i want to broke the phone man
After screen replacement everything is Perfect ?
mist813 said:
After screen replacement everything is Perfect
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Yesterday and today have been terrible, ill be sending the phone on monday, ty man, hope it will not happen again
mist813 said:
My problem happens even without the case, and I used Nillkin Nature. Phone is in service currently. When it gets back I will tell you
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Any update on your phone? Touchscreen problem solved?
Problem arrive when using 3 finger swipe for screenshoot. there is solution on net about this problem, instead 3 finger swipe just use power buton and vo- for screen shoot
Ho boy, Looks like this is a common issue, I thought it's just me and I had to live with it with this ghost touch, Particularly when dragging the notification screen and clicking on the settings it won't respond had to do multiple times. S/W update, reset nothing helped. Last week one genius broke my screen and I had to spend and replace it. After replacing the screen I'm not noticing this issue anymore.
slavke1976 said:
Problem arrive when using 3 finger swipe for screenshoot. there is solution on net about this problem, instead 3 finger swipe just use power buton and vo- for screen shoot
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As I wrote, tried everything, also disabling screenshot gesture. Problem is hardware, after warranty screen replacement everything is working fine.
At first also had problem with dragging down notifications bar, screen was not responding. Then I turn on touch location in developer options and saw that there is ghost touch in that part. Day after Day it became more disturbing to the point I could not use the Phone.
You can buy whole screen on Aliexpress and change it by yourself if You dont have warranty.
I hope Xiaomi fixes this for those affected. The Redmi 5 Plus had widespread problems with the touchscreen which is why I bought the Mi9T Pro. Not had this myself but I'll be fuming if it ever happens to my Mi9T Pro.
I've still got the Redmi 5 Plus and it's been pretty horrific - the issues started whilst it was in the warranty period and then continued/worsened from there on out. I could kick myself for not getting it serviced in-warranty. Xiaomi essentially sold a lot of people faulty devices; many complain of ghost touching / non-responsive behaviour over on the R5P XDA sub-forum like it's a ROM bug.
I'm also facing this issue of phantom touch or ghost touch.
It's really annoying. I guess screen replacement is the only solution as I've tried almost all options mentioned in various internet sources.
Xiaomi sucks..!
There were discussions and I saw lots of examples of possible solutions.
About 1 month ago, MI 9 turned itself off. I tried to boot it by power button, it started, but after few minutes it turned off again by itself with no possibility to boot it.
Okay, after few hours, I found the Volume up, Volume down and Power buttons to be simultaneously pressed, to boot it, so I tried. It started with message "The system has been destroyed". I pressed Power button once, turned it off, then again, by Power button turned it on. No data lost. All there, it did look okay. Phone booted correctly.
After few days same issue, same solution.
Then again and again, more frequently. Then I saw that I need to use hair dryer to heat it a bit, to be able to boot it.
I saw many discussions, including those here that are saying about MIUI version to be related to the issue. I don't think so.
Some users told that they finally had to send phone to service, they were told later that motherboard was replaced in order to fix the issue. I must say that issue does not look to be very rare. I saw that many MI 9's were affected (based on discussions), and, number of online shops (electronic) were selling THE motherboard for $120+. Clearly, it is visible that there is production, factory problem of one phone part.
In car (and not only car) industry, when there is a factory issue with specific part, all units were brought back to production for the bad part to be replaced, units already sold as well.
I exchanged few e-mails with Xiaomi support. First I got very generic answers. Then answers were more precise, but still not clear that they clearly recognize factory fault.
I do not have Xiaomi service close to me, so I may need to send it by mail, which I would not do (costs may be, politely said, unexpected, as they may put to the paper everything was replaced). I can bring the phone to the seller, where I bought it, to get the same unexpected results, costs up to the phone price or more, as they may put to the pricelist what they want (again not easy to trust someone who does not want to recognize own factory faults).
Clearly, this will for sure, limit my readiness to buy Xiaomi again.
Just to mention, I am having the phone turning itself off every day for more times, which is making it useless. Starting, booting works only after a bit of heating it and pressing it a bit (torque), which tells by itself that phone has some mechanical issue inside.
I would like to ask if anybody has same or similar issue and what may be resolution?
Thanks a lot.
Somehow, it looks that some series of MI 9 has the factory error on itself.
It seems that problem is mechanical, based on some construction issue.
If I am able to somehow, turn the phone on, doing next step is turning the phone off: slightly pressing upper phone part clockwise and at the same time lower phone part counterclockwise, making torque, is turning the phone off.
So, inside the phone there is electronic / construction issue, it may be related to cable, connector.
Contacting Xiaomi, with exact problem explanation is useless, I have to say that I am really disappointed in relation to everything about this phone and Xiaomi now (initially, phone worked amazingly good).
Anyone has the same issue with MI 9,or some other Xiaomi phone?
That definitely happens to me , if I double the chassis would work
Is the screen? Is the motherboard , is the chasis?
Obviously a manufacturing or design defect if multiple users are experiencing this.
May be limited to just one batch or production run, hopefully.
I removed then placed back, rear battery cover. Then, I removed and placed back upper board and battery. Next, I tried to remove and place back upper board, battery and lower board. Finally, I removed and placed back upper board, battery, upper underlying part, lower board, lower underlying part. After every single step I checked, same issue (behaving same way as I described in previous note here) - there is some badly constructed part, having loose connection. I did not try to remove screen yet.
Yes, it really is factory, production problem.
At other side, every manufacturer may make an issue in production. And there is a difference between good and bad companies.
Xiaomi can make great phones with Terapixels ( may be in near future!) of cameras and Terabytes (not so near future!) of RAM, still, if they do not recognize and have proper, correct answer to their own manufacturing errors, they are just bad.
I exchanged few e-mails with Xiaomi itself. What I got was generic, almost robotic answers. Spending time when preparing e-mails I am explaining the issue to them was total waste of time. Somehow, seems that they know about the problem but they do not want to recognize that.
And, more. Spending money to Xiaomi MI9 is waste of money. Again, phone has some really great capabilities and if it is working well, it seems to be good. When it is not working good, it's disaster. And, as it is clear, it is not rare. Many users of the phone are having this issue.
Minimum what may be expected from Xiaomi is to announce publicly that there is the problem on those and those Xiaomi Mi 9 phones, with Serial numbers starting at this or that and those phones will be replaced immediately with no questions at all.
Asking for too much?!
Maybe it can be the ic chip or the cpu , which need a reballing
Does not matter what you write to Xiaomi, generic, robotic answer is their response.
Hello, Greetings from Xiaomi Customer Support! This is GenericName.
We at Xiaomi values your trust and we apologize for the inconvenience. Rest assured that we'll assist you on this.
This is not what we expect for our customers to face it. We at Xiaomi always work hard and strive to provide our customers with the best quality products, and nothing is more rewarding than to hear from a happy customer. It's unusual to receive such an incident from our customers with all the care and attention that we give to everyone. However, I would request you to coordinate with the respective point of purchase for better and quicker support.
If you have any other questions, welcome to visit again. Always believe that something wonderful is about to happen!
Follow [email protected] to get latest product tips and service information. https://twitter.com/XiaomiSupport
Best Regards
GenericName
Got few of those; this reply came today.
I just replaced the broken display from my Zenfone 8 with a Display + chassis pack from Asus (which includes a new fingerprint scanner as it's not accessible), and everything works fine except for the fingerprint scanner. I've seen someone had the same problem on the official Asus forum but his problem wasn't solved.
Obviously Asus seems to software-lock any swapped fingerprint scanner, including the ones they sell themselves. Do you have any ideas on how to bypass this lock or make them unlock it? Did anyone have the same issue and found a solution?
Thanks!
flolaff said:
I just replaced the broken display from my Zenfone 8 with a Display + chassis pack from Asus (which includes a new fingerprint scanner as it's not accessible), and everything works fine except for the fingerprint scanner. I've seen someone had the same problem on the official Asus forum but his problem wasn't solved.
Obviously Asus seems to software-lock any swapped fingerprint scanner, including the ones they sell themselves. Do you have any ideas on how to bypass this lock or make them unlock it? Did anyone have the same issue and found a solution?
Thanks!
Click to expand...
Click to collapse
Hi, I have exactly same issue. Already written to my Chinese seller of screen replacement (it was supposed to be original) for help, but it seems one solution could be factory reset. Let me know if you've already tried it and if yes if it works ? I will come back as soon as Chinese let me know something...
phils80 said:
Hi, I have exactly same issue. Already written to my Chinese seller of screen replacement (it was supposed to be original) for help, but it seems one solution could be factory reset. Let me know if you've already tried it and if yes if it works ? I will come back as soon as Chinese let me know something...
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Click to collapse
Factory reset doesn't solve anything unfortunately, it need to be recalibrated
Yes, my investigation led me to the same point, I've already opened thread with Asus Support, finally ending with sending them phone. They haven't told me that they are going to calibrate, but I suppose they are going to do this finally. Have you passed this procedure or you gave up and you're using phone w/o fingerprint reader ?
So I'm after discussion with ASUS official service, they proposed to diagnose my phone and finally refused to calibrate claming that my LCD is not original... I suppose it is thier policy to "seal" spare parts distribution channels... Generally no hope for someone who bought part on AliExpress...