New LCD display installed, but fingerprint not working anymore. Also No fingerprint o - Lenovo P2 Questions & Answers

Just installed a new LCD display. Display works fine but fingerprint not working anymore. What could be the problem!?!??

Did you repair it yourself or did you give it to a service center?

I did it myself

Ecto5 said:
Did you repair it yourself or did you give it to a service center?
Click to expand...
Click to collapse
I did it myself. Why?

Did you damage the ribbon cable while replacing the display? From my experience they are very delicate

From where did you bought the LCD display from? Is it bought online or sourced from your local mobile market? I'm unable to source one myself so asking for help. Thanks.

Though I don't like to mention this on here because it is an android forum I think your fingerprint sensor can't work because of hardware change problem.the hardware in the phone does not recognise the new Lcd screen when it comes to fingerprint.this is the exact same thing with iPhone Apple touch id will not work anymore iff you change the digitizer. I know this because my friend fixes iPhone screens and always has problem with touch id.something to do with hardware mismatch.

1manshow said:
From where did you bought the LCD display from? Is it bought online or sourced from your local mobile market? I'm unable to source one myself so asking for help. Thanks.
Click to expand...
Click to collapse
I bought it from eBay. On AliExpress there was only one seller, 160€! I waited for price drop but suddenly object was not available anymore. Then accidentally a week later saw the object on eBay also one seller, 100€. Bought immediately because was only chance..
I just looked and can't find object anymore so I think you have no chance of buying..

A little ot
How is the screen? Like the original amoled?

Liacon said:
A little ot
How is the screen? Like the original amoled?
Click to expand...
Click to collapse
To be honest I don't see much diffirence, but then again I can't actually compare it .. I'm happy with the result. There are no faults, whole screen is clear, no problems.

sam00561 said:
Though I don't like to mention this on here because it is an android forum I think your fingerprint sensor can't work because of hardware change problem.the hardware in the phone does not recognise the new Lcd screen when it comes to fingerprint.this is the exact same thing with iPhone Apple touch id will not work anymore iff you change the digitizer. I know this because my friend fixes iPhone screens and always has problem with touch id.something to do with hardware mismatch.
Click to expand...
Click to collapse
LCD and fingerprint are different pieces, I think it should not affect outcome.
Does changing display really stop the fingerprint recognition? @melchiar

lorderater said:
LCD and fingerprint are different pieces, I think it should not affect outcome.
Does changing display really stop the fingerprint recognition? @melchiar
Click to expand...
Click to collapse
yes really no fingerprint recognition. Even the options aren't there anymore. I think the buttonhardware is broken.

melchiar said:
yes really no fingerprint recognition. Even the options aren't there anymore. I think the buttonhardware is broken.
Click to expand...
Click to collapse
Aha, so it is broken and the display has nothing to do with that problem, right?

lorderater said:
Aha, so it is broken and the display has nothing to do with that problem, right?
Click to expand...
Click to collapse
Well I can't confirm that the fingerprint is actually broken. I know that when you replace a iPhone screen the fingerprint also don't work anymore because the replacement screen isn't official, and for some reason there is a software conflict. Maybe here it is the same thing. Idk

Related

[Q] Capacitive buttons stop working

Today is a very sad day for me somehow my new htc one x's capaticive buttons stopped working i restarted and even factory resetted and they are not working anymore
my previous htc hd2 was stopped digitizer working too. How unlucky i am.
I guess I neet to install CWM and using on screen button
which rom do you reccomend? ı used to install couple roms to hd2 but i havent tried with one x
thank you all
Factory reset will only reset it to the rom you have flashed. Have you tried flashing the correct ruu for your phone? When you say it's new, how new? New enough to return to where you got it for replacement?
Sent from my HTC One X using Tapatalk 2
Yes this happened to me two days ago as well my buttons light up but that it so I looked everywhere for a fix but no luck now I'm on icsCOLDJELLY 3.2.1 AOKP so now I can use my phone not to sure if I did something wrong when I flashed ANDROID revolution 12 or maybe the firmware
Sent from my HTC One X using xda premium
I have installed icecoldjelly but then I had problem with mobile network :s
capacitive buttons stopped working
my htc one x touch sensitive buttons have stopped working like a week ago, i then installed the coldjellybean by which i got that onscreen buttons after 2 days the buttons started working n i thought of selling the set but as i was going to make a deal with a person that day the problem appeared again, i dont have the warranty left and the screen replacement is quite not an option. Is there any trick that i can work on to make them work again.
ZOHAIBAR said:
my htc one x touch sensitive buttons have stopped working like a week ago, i then installed the coldjellybean by which i got that onscreen buttons after 2 days the buttons started working n i thought of selling the set but as i was going to make a deal with a person that day the problem appeared again, i dont have the warranty left and the screen replacement is quite not an option. Is there any trick that i can work on to make them work again.
Click to expand...
Click to collapse
it could be just the digitizer and on ebay you can find it quite cheap.
fireblade said:
it could be just the digitizer and on ebay you can find it quite cheap.
Click to expand...
Click to collapse
i took the phone to my local market n came to know that the their isnt any separate capacitive buttons cable, it is embedded within the lcd, so if i have to order then whole complete lcd + digizer + module, and i checked the online purchase price is almost the same price the local market ppl are offering that is near 60 dollars.
Just that i am not sure why does the buttons stopped working and if somehow why they started working n now have again stopped ;(
ZOHAIBAR said:
i took the phone to my local market n came to know that the their isnt any separate capacitive buttons cable, it is embedded within the lcd,
Click to expand...
Click to collapse
not sure what you mean.. look at this: http://www.ebay.com/itm/New-Touch-S...865?pt=LH_DefaultDomain_0&hash=item4d02ec98e9
anyway it happened to me with another phone that a portion of the digitizer stopped working for a few days, then it started working again and then it stopped for good and had to replace it.
fireblade said:
not sure what you mean.. look at this: http://www.ebay.com/itm/New-Touch-S...865?pt=LH_DefaultDomain_0&hash=item4d02ec98e9
anyway it happened to me with another phone that a portion of the digitizer stopped working for a few days, then it started working again and then it stopped for good and had to replace it.
Click to expand...
Click to collapse
hmmm, well actually i was reading all the other threads with this issue and came upton this
Code:
http://forum.xda-developers.com/showthread.php?t=1696552
Which shows "DO NOT try to replace the screen by yourself" and i can see that on my set that its rather v hard to do this thing instead everyone says to buy the whole module as it is very complex thing to do.
ZOHAIBAR said:
hmmm, well actually i was reading all the other threads with this issue and came upton this
Code:
http://forum.xda-developers.com/showthread.php?t=1696552
Which shows "DO NOT try to replace the screen by yourself" and i can see that on my set that its rather v hard to do this thing instead everyone says to buy the whole module as it is very complex thing to do.
Click to expand...
Click to collapse
it is hard to separate the digitizer from the lcd but it's doable and nothing like the iphone digi+lcd that uses an epoxy adhesive. so if you are carefull (or have someone skilled doing it for you) you wont break the lcd and you'll save quite some money. it's true though that the new digitizer wont stick to the lcd as well as a "genuine combo digi+lcd" and you will notice dust building in between the two. my advice, if you know someone that is skilled enough, try get the digitizer off without breaking the lcd and if you manage that then buy the new digitizer. otherwise since you said that changing the whole digi+lcd is not an option you can always try sell your one x as damaged or use it as an expensive paperweight.
best of luck mate, i hope you solve it one way or another.
fireblade said:
it is hard to separate the digitizer from the lcd but it's doable and nothing like the iphone digi+lcd that uses an epoxy adhesive. so if you are carefull (or have someone skilled doing it for you) you wont break the lcd and you'll save quite some money. it's true though that the new digitizer wont stick to the lcd as well as a "genuine combo digi+lcd" and you will notice dust building in between the two. my advice, if you know someone that is skilled enough, try get the digitizer off without breaking the lcd and if you manage that then buy the new digitizer. otherwise since you said that changing the whole digi+lcd is not an option you can always try sell your one x as damaged or use it as an expensive paperweight.
best of luck mate, i hope you solve it one way or another.
Click to expand...
Click to collapse
haha that paperweight thing made my day... well thanks for the advice but i think i am going to wait until it gets ok by itself as it happened before until then icecoldjelly rom would be a temporary solution for the onscreen buttons. Thanks anyway

Serious Screen Problems

Hi guys
This is my first thread, in this forum. Personally, i've never moded my cell phone, but recently attempted to root and mod my wildfire s.
I succeeded, this forum was really helpfull!
Even before the mod, my screen was driving me crazy. In the begining it took my attempts to unlock the phone. Some other time, in the messages section, keypad would act on his own, literally Even if i typed "A" it would typed "enter" or anything else but "A". So I enabled touch trace to see what happens.Here is the thing, like i suspected, touchscreen's reactions are spoted away of the point i touch. Sometimes, two touch traces appear on the screen.. Some other times, its extremely difficult to unlock the screen, hang up the phone, or use the menu.. So that's the story. With the mod nothing changed..
Is it a hardware problem? Is it a software problem?
Thanks in advance.. :good::good:
PS: I use cyanogenmod 10
Only a couple of apps installed
PS: english is not my mother language so, maybe some unusual expressions and dictation could by used :angel:
Which rom?
Sent from my Wildfire S A510e using xda premium
edited main
mahesh48 said:
Which rom?
Sent from my Wildfire S A510e using xda premium
Click to expand...
Click to collapse
cyanogen 10
i had this problem too:
It's not a big problem..
your hand is wet, and the screen also, but if you dry it with a polyester (of your t-shirt) it will work..
only dry the display and your hand
so..
iPlopp4D said:
i had this problem too:
It's not a big problem..
your hand is wet, and the screen also, but if you dry it with a polyester (of your t-shirt) it will work..
only dry the display and your hand
Click to expand...
Click to collapse
you mean to take out the touch screen and dry it? Because right now im pretty sure its absolutely dry
Hi, ghost inputs is a known issue caused by the charger delivering incorrect voltage/amperes. Are you using the stock one ?
omnomnomkimiiee said:
Hi, ghost inputs is a known issue caused by the charger delivering incorrect voltage/amperes. Are you using the stock one ?
Click to expand...
Click to collapse
Yes im using the stock one. I ve never measured the output though.. I maybe check it tomorrow.. But the problem is constant and happening, not only when the device is plugged... The other thing is, there isnt only ghost inputs, there are freezings too. Or a thing, where ex: im trying to unlock the phone, so i slide to the side, and visually im almost unlocking it, but in real, nothing happens. Its still on lock screen.
any other?? im kinda desperate with this phone.. :crying:
Perhaps a recalibration might work.
Sent from my HTC Wildfire S using xda app-developers app
rishr4 said:
Perhaps a recalibration might work.
Sent from my HTC Wildfire S using xda app-developers app
Click to expand...
Click to collapse
So as i think of it ill firstly calibrate the screen and then is problem still appears i will replace the digitizer
Underdogg27 said:
So as i think of it ill firstly calibrate the screen and then is problem still appears i will replace the digitizer
Click to expand...
Click to collapse
yes, If re-calibration is not helping then you need to replace the digitizer. Am also suffering the same issue now. Just got my digitizer replaced two days before. But am still suffering from some issues regarding touch. Gonna have to recheck with the retailer
rishr4 said:
yes, If re-calibration is not helping then you need to replace the digitizer. Am also suffering the same issue now. Just got my digitizer replaced two days before. But am still suffering from some issues regarding touch. Gonna have to recheck with the retailer
Click to expand...
Click to collapse
Recalibration was succesfull it didn't come up with any change though...
So can you update this thread with your progress?? If your issue is fixed with the replacement of the digitizer then ill order one.
Underdogg27 said:
Recalibration was successful it didn't come up with any change though...
So can you update this thread with your progress?? If your issue is fixed with the replacement of the digitizer then ill order one.
Click to expand...
Click to collapse
Sure thing. I am gonna clarify this with the retailer EOD.
ITS a hardware problem
i'm pretty sure its an hardware problem,did your wfs ever fall down or get submerged in water ??
Have you tried another charger?
omnomnomkimiiee said:
Have you tried another charger?
Click to expand...
Click to collapse
That issue applies while we try accessing the phone while it is charging , right ? I mean, the touch response will be strange while the phone is been charged. But, here the OP is having issues with the touch screen all the time (charging / not-charging) . And re-calibration didn't work too.
hellfire7777 said:
i'm pretty sure its an hardware problem,did your wfs ever fall down or get submerged in water ??
Click to expand...
Click to collapse
not as far as i remember..
omnomnomkimiiee said:
Have you tried another charger?
Click to expand...
Click to collapse
Ghost input isn;t my problem.. Touch issue happens all the time charging/discharging
rishr4 said:
That issue applies while we try accessing the phone while it is charging , right ? I mean, the touch response will be strange while the phone is been charged. But, here the OP is having issues with the touch screen all the time (charging / not-charging) . And re-calibration didn't work too.
Click to expand...
Click to collapse
Right.. Recalibration wasn;t helpfull.. Im waiting your report about Digitiser replacement so ill get one and fix that matter.
Hope its screen's issue, and not some further hardware damaga
It will take another two days for him to find out and clarify the issue. If it is a digitizer issue or some other hardware issue, I will update the same here ASAP.
rishr4 said:
That issue applies while we try accessing the phone while it is charging , right ? I mean, the touch response will be strange while the phone is been charged. But, here the OP is having issues with the touch screen all the time (charging / not-charging) . And re-calibration didn't work too.
Click to expand...
Click to collapse
Nope, issue happens at all times due to residual current.
rishr4 said:
It will take another two days for him to find out and clarify the issue. If it is a digitizer issue or some other hardware issue, I will update the same here ASAP.
Click to expand...
Click to collapse
Oh thanks a lot mate.. Im kinda desperate with this device.. 2 years counting, warranty void and this ****ty thing came up from nowhere..
omnomnomkimiiee said:
Nope, issue happens at all times due to residual current.
Click to expand...
Click to collapse
I thought this was the error in the first place i measured current and voltage on the output of the charger and it seems legit..
I did change the charger thoug. So i didnt know how to proceed on this one. The way im thinking of it right now, i might let the battery completely deplete and charge from the new one?

[Q] Primary Camera flash greenish tint problem

Hey,
I just purchased a HTC Desire 820 dual sim about 3 days back, and on clicking pictures with flash on from the primary 13MP camera, an evident greenish tint is noticed.
Is anyone else having the same problem, or should I opt for replacement? Is it a hardware or software problem?
Attaching samples.
Please help ASAP. Thanks!
same problem here with me
I have exactly the same problem, however i requested the new replacement model from the retail online site. It's a software glitch, because playing with the setting like using florescent option it solves, so it is complete software issue, but in a replacement warranty scenario i am asking for the replacement, lets c what happens next..
write2vivek86 said:
I have exactly the same problem, however i requested the new replacement model from the retail online site. It's a software glitch, because playing with the setting like using florescent option it solves, so it is complete software issue, but in a replacement warranty scenario i am asking for the replacement, lets c what happens next..
Click to expand...
Click to collapse
I have opted for a replacement myself, but I doubt that will solve the problem. It is not a small issue, I don't know if I should persist with the device. Will HTC rectify it? Was it there before the software update too?
Urgent!
Guys please test on your own devices and post the results.
Do surely tell us
amankothari30 said:
I have opted for a replacement myself, but I doubt that will solve the problem. It is not a small issue, I don't know if I should persist with the device. Will HTC rectify it? Was it there before the software update too?
Click to expand...
Click to collapse
Dear when getting phone, do first is take picture firing flash and see whether the problem remains, do not update the phone, do it before updating the phone, and do tell us here. My new replacement phone is on the way, whenever i will get it.. i will surely share the experience..
write2vivek86 said:
Dear when getting phone, do first is take picture firing flash and see whether the problem remains, do not update the phone, do it before updating the phone, and do tell us here. My new replacement phone is on the way, whenever i will get it.. i will surely share the experience..
Click to expand...
Click to collapse
Received the replacement unit, issue still exists. It is a problem with the device itself I feel.
Same greenish tint issue
Guys,
This might sound funny to you that i first purchased this device on 25th Jan 2015 and there were no greenish tint issues in that phone but it was automatically rebooting itself when i tried to click pics with the FLASH ON. This didn't happen when I purchased the device, happened at a later stage (after a day). So I went up to HTC and asked for the repair of the device (I knew i'll get the DOA bcoz it was a faulty piece) and I got the DOA after they tested it.
Got the replacement and I'm seeing this issue on my phone. Searched around the forum to find out that I'm not the only one facing this issue.
I first thought that it would be a hardware issue but its not guys, its a software issue. Change the settings to "Flourescent" and the greenish tint disappears, though you'll see a light blue effect on it.
Lets just hope HTC releases an update for this.
iamsidv said:
Guys,
This might sound funny to you that i first purchased this device on 25th Jan 2015 and there were no greenish tint issues in that phone but it was automatically rebooting itself when i tried to click pics with the FLASH ON. This didn't happen when I purchased the device, happened at a later stage (after a day). So I went up to HTC and asked for the repair of the device (I knew i'll get the DOA bcoz it was a faulty piece) and I got the DOA after they tested it.
Got the replacement and I'm seeing this issue on my phone. Searched around the forum to find out that I'm not the only one facing this issue.
I first thought that it would be a hardware issue but its not guys, its a software issue. Change the settings to "Flourescent" and the greenish tint disappears, though you'll see a light blue effect on it.
Lets just hope HTC releases an update for this.
Click to expand...
Click to collapse
Not software, hardware. It was there on my unit even before the software update. It's there only on a specific batch I guess. I returned it. Can't tolerate the faulty piece.
amankothari30 said:
Not software, hardware. It was there on my unit even before the software update. It's there only on a specific batch I guess. I returned it. Can't tolerate the faulty piece.
Click to expand...
Click to collapse
So, is it working fine? What was the color of your phone which had the greenish tint? Mine is grey.
iamsidv said:
So, is it working fine? What was the color of your phone which had the greenish tint? Mine is grey.
Click to expand...
Click to collapse
Mine WAS grey too. I returned it for refund.
amankothari30 said:
Mine WAS grey too. I returned it for refund.
Click to expand...
Click to collapse
Okay, As I suspected that it would be a SOFTWARE ISSUE and NOT a hardware issue was TRUE.
Today I went to the HTC Repair Center and opted for the issue to get fixed. One of its representatives pointed it to be software issue.
They took my phone and FIXED it and now the camera works perfectly fine with FLASH ON.
Hope this helps other guys out there.
:good:
iamsidv said:
Okay, As I suspected that it would be a SOFTWARE ISSUE and NOT a hardware issue was TRUE.
Today I went to the HTC Repair Center and opted for the issue to get fixed. One of its representatives pointed it to be software issue.
They took my phone and FIXED it and now the camera works perfectly fine with FLASH ON.
Hope this helps other guys out there.
:good:
Click to expand...
Click to collapse
Did they give any reason as to why the problem was present? It it working perfectly now, with all problems solved?
What was your device color and batch of purchase? Which service center (city)?
iamsidv said:
So, is it working fine? What was the color of your phone which had the greenish tint? Mine is grey.
Click to expand...
Click to collapse
i had the same green tint problem i ordered an replacement from an online retailer they gave 30 days replacement guaranty now on the new 820 there is no issue with the cameraworks perfectly
jeneel said:
i had the same green tint problem i ordered an replacement from an online retailer they gave 30 days replacement guaranty now on the new 820 there is no issue with the cameraworks perfectly
Click to expand...
Click to collapse
Which online retailer specifically, if you don't mind? Which batch is your replaced device from? Were they able to specify any reason for the same?
amankothari30 said:
Which online retailer specifically, if you don't mind? Which batch is your replaced device from? Were they able to specify any reason for the same?
Click to expand...
Click to collapse
i bought it from flipkart india..........it is definately a hardware issue as i tried different camera app till the issue oersisted...if ur are in the 1st 15 days of your purchase htc will replace it at their service centre
amankothari30 said:
Did they give any reason as to why the problem was present? It it working perfectly now, with all problems solved?
What was your device color and batch of purchase? Which service center (city)?
Click to expand...
Click to collapse
1) They said it was a software issue.
2) Yes its working perfect now with the stock camera app and other camera apps as well.
3) ALL PROBLEMS SOLVED.
4) Grey Color.
5) Batch of purchase? Please explain this..
6) Service center is in new delhi, ansal plaza.

i want to know your phone's to?

first i'm korean before start my grammer is totally trash
i use Samsung Galaxy A7 2017 korea carrier SKT
my a7 has oled problem... has green spot
i repaired in 10.2017 but it doens't disapper in my phone
your phone's too?
eunsung7642 said:
first i'm korean before start my grammer is totally trash
i use Samsung Galaxy A7 2017 korea carrier SKT
my a7 has oled problem... has green spot
i repaired in 10.2017 but it doens't disapper in my phone
your phone's too?
Click to expand...
Click to collapse
Screenshot?
Have you replaced the screen or how did you repair it? And no, I've never experienced such a problem.
moozer said:
Screenshot?
Click to expand...
Click to collapse
Since it's probably a display bug I doubt that this would show the problem.
Reeii said:
Have you replaced the screen or how did you repair it? And no, I've never experienced such a problem.
Since it's probably a display bug I doubt that this would show the problem.
Click to expand...
Click to collapse
Then what's a red dot or a white dot....this is new....just wondering if it's in a similar place to other reported spots
Reeii said:
Have you replaced the screen or how did you repair it? And no, I've never experienced such a problem.
Since it's probably a display bug I doubt that this would show the problem.
Click to expand...
Click to collapse
No reason why a camera pic of the screen can't be used.

Need non working moto g, for screen replacement

Need to replace my device screen. Any one having a non working moto g with good display... If anyone having a non working device and ready to sell....
I have one.. Display is good... but touch is not working (since i broke screen glass)
I actually have one I'm looking to get rid of. Only thing wrong with the phone is the SIM card slot is ruined. Screen is still in fantastic condition.
Ozzy0708 said:
I actually have one I'm looking to get rid of. Only thing wrong with the phone is the SIM card slot is ruined. Screen is still in fantastic condition.
Click to expand...
Click to collapse
Are u going to repair it, if u can't able to repair and change ur mind let me know. Now i have 2 phones with display broken redmi note 4 mido and my older moto g
SunilSuni said:
I have one.. Display is good... but touch is not working (since i broke screen glass)
Click to expand...
Click to collapse
Mine too, display is good bt touch not working properly, glass is completely broken
manojtpoulose said:
Mine too, display is good bt touch not working properly, glass is completely broken
Click to expand...
Click to collapse
Same problem here.. thought of buying new mobile

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