Possible solution to ineffective fingerprint scanner - Atrix 4G General

After a month of using my Atrix 4G, a friend of my brother bought one for himself... only to realize his fingerprint scanner's faulty. After close inspection, I see that it's not a hardware problem, but just a cosmetic problem. At the power button, the hinge is uneven due to the tape (yes, the TAPE) that covers the sensor. And so I thought, 'could it be replaced instead of the whole panel' because if I rub on the sensor hard enough, it would actually register the print.
This is something I've found out; try it at your own risk - or enjoyment - as of now I can't find the right type of tape to replace the sensor's... so it wouldn't block the scanner or not registering the heat.

Whoa!!! Hold on there.
Unless someone has actually applied a layer of tape to your Atrix, there is no "Tape" on the fingerprint sensor that can be replaced.
Please do not even think about trying to dissassemble the fingerprint sensor. The black surface is not "Tape" in the sense that you are imaging. It absolutely cannot be peeled away and replaced.

Dave__C said:
Whoa!!! Hold on there.
Unless someone has actually applied a layer of tape to your Atrix, there is no "Tape" on the fingerprint sensor that can be replaced.
Please do not even think about trying to dissassemble the fingerprint sensor. The black surface is not "Tape" in the sense that you are imaging. It absolutely cannot be peeled away and replaced.
Click to expand...
Click to collapse
werd
10char

Related

camera problem... please help...

guys i have a really bad problem with my camera...
since yesterday i have two big black flakes on my photos (and on viewport too!)
i reverted to jm8 using odin...
then i dissembled the device to see if the problem is on cameras cover but even without that glass part those flakes are still there...
does anybody have any idea?
i think i need to send it to service
this is how it looks like now:
http://img291.imageshack.us/i/20110321005202.jpg/
anybody.. :S
Dust specs on the camera sensor, chances are the sensor and lens autofocus assembly are a sealed unit making it hard to clean, if they are not sealed a good blow with a rocket blower would shift them.
Other wise either send it in for service or give the phone a few sort sharp knocks on the palm of your hand along the oposite edge from where the dust apears. The sensor is mirrored so what apears bottom left is actually top right.
thank you steph that makes sense...
how can i find cameras sensor to clean it?
i don't think the dust is on the len right?
The actual dust specs will probably be about .5mm in size its possible they are on the lens but i would put money on the sensor. Aim the camera at a bright suface in macro mode such as a white computer screen with a black dot to help focus. Give the phone a few knocks and see if it shifts any, repeat process a few times. If nothing moves then either dissasemble or send it in. Remember opening the unit up could introduce more dust.
The sensor is located directly behind the lens, it is would have a Glass filter over it NEVER EVER touch it with anything if you dont know exactly what you are doing. I would imagine it is about the same size as the glass cover (probably smaller) dust will be attracted to it like a magnet, you could try a rocket blower, or canned air ( no more than 2 sprays or it will ice up.
Dont get me wrong its very easy to clean but super easy to scratch with even the best cloth.
i tried to knock on it but nothing moved
i guess im gonna try a rocket blower or something like that. honestly i don't want to send it in...
btw thank you very much for your help steph.

issue with screen and calls caused by case

ok so i bought a leather flip wallet for my streak heres link
http://www.ebay.co.uk/itm/190596988332?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
anyway, so when i get a call or make a call, my screen goes black and no matter what i do i cant get it ack on, the only way to get screen back is to remove from case as soon as i do it comes on again , is there a solution for this? how can a leather case cause this is it something to do with the magnets on the case?
i have no other issues other than that one which is why im kinda stumped as to whats causing it
any ideas would be appreciated
105 views no replies?
There is a possibility that the Dell Streak 5 has a proximity sensor that is being covered or activated by the new leather cover you've bought.
Seems logical, but it's worth checking up on.
Sent from my Dell Streak 5 Hybrid using XDA App
Well i also have a carbon fibre skin on it and the case doesnt cover anymore than the skin, so dont think its a proximity sensor, thanks for reply though
Sent from my Dell Streak using xda premium
I have an Otterbox case on mine, the holes for the sensors have been very carefully designed, despite the thickness of the thickness of the case, and it is very thick indeed. The holes are designed like funnels so that the outer edges are wider than the inner edges. I strongly suspect this was done because the sensors that blank the screen when it is close to your face is very sensitive. I've experimented with holding it to my face, I'm sure the case you got is fooling the sensors as it must be slightly covering one of them.
It seems the most logical answer.
Sent from my Dell Streak 5 using the XDA Premium App.
i can see where your coming from witht that, but it doesnt cover the sensor at all, the weird part is, if i pull it half way out my case it does cover the sensor but the case then screen back on lol
Got a pic of the case?
From the picture in the link in the first post, the cut out doesn't look like it extends far enough to uncover the proximity sensor. The proximity sensor is next to the front facing camera.
Just my opinion from a poor picture. If it works out of the case but not in the case, logic would dictate that the case is the problem.
kraz
I should have said "better picture" but in reality I didn't look at the link.

A fix for Proximity sensor issues on replacement screens

Hey everyone, recently I have been facing a lot of issues with the 'ghost screen' issues on my digitizier and my battery became inflated as well.
You can read about that sad story here:
http://forum.xda-developers.com/nexus-4/help/nexus-4-touchscreen-issues-t2712807
So about 3 days back I went out and bought a new Frame+Display/Digitizier and a new Battery.
Everything was great except for the proximity sensor.
It keeps on turning off the screen during a call because the sensor thinks its covered up.
A bit if googling and I can see that this is a common issue with people who have done a screen change.
The thing is that the fix is pretty simple. All I did was that I took off the back cover and the plastic frame on top of the motherboard and placed a small folded sheet of paper behind the sensor module. I then reinstalled the plastic frame and the glass back. The sensor now works perfectly.
The thing is that I guess the sensor became a little loose and the air gap between the proximity sensor and the front glass resulted in a faulty sensor reading.
The paper presses the sensor module down and eliminates the gap between the sensor and the front glass, thus fixing the problem.
If you dont have a warranty and really want to fix your phone easily, try it.
It took me about 3 minutes to do the whole thing.
Akash434 said:
Hey everyone, recently I have been facing a lot of issues with the 'ghost screen' issues on my digitizier and my battery became inflated as well.
You can read about that sad story here:
http://forum.xda-developers.com/nexus-4/help/nexus-4-touchscreen-issues-t2712807
So about 3 days back I went out and bought a new Frame+Display/Digitizier and a new Battery.
Everything was great except for the proximity sensor.
It keeps on turning off the screen during a call because the sensor thinks its covered up.
A bit if googling and I can see that this is a common issue with people who have done a screen change.
The thing is that the fix is pretty simple. All I did was that I took off the back cover and the plastic frame on top of the motherboard and placed a small folded sheet of paper behind the sensor module. I then reinstalled the plastic frame and the glass back. The sensor now works perfectly.
The thing is that I guess the sensor became a little loose and the air gap between the proximity sensor and the front glass resulted in a faulty sensor reading.
The paper presses the sensor module down and eliminates the gap between the sensor and the front glass, thus fixing the problem.
If you dont have a warranty and really want to fix your phone easily, try it.
It took me about 3 minutes to do the whole thing.
Click to expand...
Click to collapse
I replaced my glass, and I decided upon the exact same solution, which also worked for me.
Great advice! I recommend it.
James

Iffy Proximity Sensor

Hi All
Picked up a Nexus 4 a few days ago and only just noticed (as result of a call) that the proximity sensor is reporting that its "blocked" at all times, so the phone things its against my head. I can workaround this by using the "Power button to hang Up" option but at present cannot access any in call features.
When I look under good light the sensor, there are 2 areas so not sure which is the sensor, I can see what looks like a bubble under both. if you imagine what an air pocket looks like under a screen protector thats what it looks like but its behind the glass, perfectly centred. I guess its possible that something has broken here as a result of the drop, the top left corner was the point of impact, does that seem likely?
I got the phone cheap as it had a broke screen so have a new one coming. Its the full screen, glass and digitizer. Does anyone know of the sensor is part of the screen or does it sit behind and then I could be really screwed!
Ta
bert682 said:
Hi All
Picked up a Nexus 4 a few days ago and only just noticed (as result of a call) that the proximity sensor is reporting that its "blocked" at all times, so the phone things its against my head. I can workaround this by using the "Power button to hang Up" option but at present cannot access any in call features.
When I look under good light the sensor, there are 2 areas so not sure which is the sensor, I can see what looks like a bubble under both. if you imagine what an air pocket looks like under a screen protector thats what it looks like but its behind the glass, perfectly centred. I guess its possible that something has broken here as a result of the drop, the top left corner was the point of impact, does that seem likely?
I got the phone cheap as it had a broke screen so have a new one coming. Its the full screen, glass and digitizer. Does anyone know of the sensor is part of the screen or does it sit behind and then I could be really screwed!
Ta
Click to expand...
Click to collapse
Ok so I did a little more reading and it seems that a gorilla has changed the screen on this phone in the past and he / she has used compound to stick the screen down and some of it has gone around the sensor and the resulting press down on the screen has created a few air pockets.
Looking less forward to changing the screen now as no doubt with my luck the "technician" will have used some crazy heat resistant glue!
Also....missing the speaker grille....funny how you only notice things after you have bought them!
Search for proximity sensor fix after screen replacement here on xda. I've found out that if you switch sides of the little rubber /plastic cover that covers the proximity sensor, your problem will be solved. And the light sensor will work with no problems as well.
Sent from my Nexus 4 using Tapatalk
Sp_Ark said:
Search for proximity sensor fix after screen replacement here on xda. I've found out that if you switch sides of the little rubber /plastic cover that covers the proximity sensor, your problem will be solved. And the light sensor will work with no problems as well.
Sent from my Nexus 4 using Tapatalk
Click to expand...
Click to collapse
Really?
From reading the thing to do is either make the height of the bushing a little larger, height wise. Or, to increase the diameter of the holes.
I like your fix the best though....no messing about, just rotate.
Will give it a go, thanks!
It will work for sure, I posted this fix on a YouTube screen replacement guide of octopus glues I think and its confirmed to work from a lot of people. Then if you use a custom rom go to brightness settings while having auto brightness enabled and try changing light sources from dark to very bright places to see the instant lux values you get. If you are not satisfied with the result try custom auto brightness values.
Sent from my Nexus 4 using Tapatalk
bert682 said:
Really?
From reading the thing to do is either make the height of the bushing a little larger, height wise. Or, to increase the diameter of the holes.
I like your fix the best though....no messing about, just rotate.
Will give it a go, thanks!
Click to expand...
Click to collapse
Yep, I discovered this "fix" in a random youtube comment (was that you @Sp_Ark?) just a few days ago, and it worked for me. Then I found a thread here that confirmed that this could be a solution (which could have saved me a week of frustration).
If there's actually something on the proximity sensor, then you might be screwed. Well, not really, or $10 from China. The module is a snap-in piece with connector ribbon that also has the headphone jack. The prox sensor is the smaller one on the right side (when looking at the screen).
Disassembly of the Nexus 4 is pretty simple compared to many other smartphones. You'll need a T5 TORX wrench/bit for the screws at the bottom, and a very small Phillips driver for all the screws in the inside. You'll also need a tool to split the 2 halves apart (your screen replacement might have come with tools). You can find a couple videos on youtube, as well as a detailed teardown (pics) at ifixit.com. If you have a hairdryer (or an actual heat gun) you can make the process easier by softening the glue with heat, but it's not absolutely necessary. Just go slowly and be careful when prying the halves apart so you don't flex it too much and break the glass back.
Which screen assembly did you get? You can get it where it's just the LCD and the digitizer, and you can also get it that has the bezel and speaker with it. When I replaced the screen on my N4, I got the whole deal with the bezel and speaker, since it meant less work and fewer things to screw up.
Planterz said:
Yep, I discovered this "fix" in a random youtube comment (was that you @Sp_Ark?) just a few days ago, and it worked for me. Then I found a thread here that confirmed that this could be a solution (which could have saved me a week of frustration).
If there's actually something on the proximity sensor, then you might be screwed. Well, not really, or $10 from China. The module is a snap-in piece with connector ribbon that also has the headphone jack. The prox sensor is the smaller one on the right side (when looking at the screen).
Disassembly of the Nexus 4 is pretty simple compared to many other smartphones. You'll need a T5 TORX wrench/bit for the screws at the bottom, and a very small Phillips driver for all the screws in the inside. You'll also need a tool to split the 2 halves apart (your screen replacement might have come with tools). You can find a couple videos on youtube, as well as a detailed teardown (pics) at ifixit.com. If you have a hairdryer (or an actual heat gun) you can make the process easier by softening the glue with heat, but it's not absolutely necessary. Just go slowly and be careful when prying the halves apart so you don't flex it too much and break the glass back.
Which screen assembly did you get? You can get it where it's just the LCD and the digitizer, and you can also get it that has the bezel and speaker with it. When I replaced the screen on my N4, I got the whole deal with the bezel and speaker, since it meant less work and fewer things to screw up.
Click to expand...
Click to collapse
I got a "kit" off eBay, [URL="http://www.ebay.co.uk/itm/181144377215?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT"]http://www.ebay.co.uk/itm/181144377215?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT so it appears to be the complete screen. Ive watched a few videos but from the pictures it looks like the screen comes with the metal backing so I suspect I dont need to remove the old screen from the casing, thoughts?
Im expecting this to be the screen, bezel, and metal backing so I need to do is connect in my motherboard and all the other components.
Am I off in thinking this?
That's the full part. The one you've posted is the type I usually go for, they're good quality so far.
bert682 said:
I got a "kit" off eBay, http://www.ebay.co.uk/itm/181144377215?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT so it appears to be the complete screen. Ive watched a few videos but from the pictures it looks like the screen comes with the metal backing so I suspect I dont need to remove the old screen from the casing, thoughts?
Im expecting this to be the screen, bezel, and metal backing so I need to do is connect in my motherboard and all the other components.
Am I off in thinking this?
Click to expand...
Click to collapse
You made a wise choice, young padawan.
Yeah, that looks to be the entire front assembly, including the screen+digitizer, already installed in the bezel. Also includes the earpiece plus the speaker grill that you're missing. You'll have to swap over the guts, and that's about it. It's easiest to swap the power and volume rocker buttons first since it's a bit harder to get them where they go if you've got the logic board in the way. Just remember that the contact points need to make a ^ rather than a v when you're assembling it with the screen facing down. Tweezers are good to have, especially if they're very long and even better if they're curved. I also recommend doing this over a clean towel to avoid scratching the screen (there'll probably be a film over it too), and the fluffier the towel the better, to catch the tiny screws from flying and disappearing.
Honestly, getting the 2 halves apart is probably the hardest part. They make specialized tools for this, and often the sellers will include them, but it doesn't look like your purchase includes them (mine didn't either). Something plastic is the best choice, since you're less likely to cause cosmetic damage to the plastic (especially the bezel) if you slip (and you will slip). As I said before, GO SLOWLY. Work it apart a little bit at a time, alternate side to side, starting from the bottom. Eventually you'll be able to pull the 2 halves apart.
The battery will be stuck in pretty good and will need to be pried out. If I were you (and a week or so ago, I was you), I'd pop a new battery in while you're at it. At this point in the phone's life, it's probably had at least a few hundred cycles on the battery and has lost 10-20% of its original capacity. The other components shouldn't be nearly as hard to get out. Just pry in various points until the piece pops out. Do not force anything. Just work it out slowly. After you pop off the piece that covers the USB port, there's the board that has the port, and that can be slightly tricky to get out. Best way I found is to slip something small and flat (screwdriver?) into the port and push up and out, and the board should come out easily.
Thankfully, there's only 3 different screws used, and they're all easily differentiated from each other. There's the 2 T5 TORX that hold the halves together, the 2 very short screws with wide heads that hold the battery in place, and the rest that hold everything else are all identical to each other.
It looks like on your assembly, it comes with its own adhesives. Everywhere there's a blue film, pull it off and there'll be adhesive underneath. I'd recommend leaving the film on over the part where the sensor/headphone jack module goes until you're sure you can stick it in place with the proximity sensor not acting wonky. Download an app (I used Phone Tester) that can read the prox sensor. FYI, as long as everything is in place, and you've attached the battery, you can boot the phone without replacing the back cover, and test the sensor (just depress the center bit of the power button board). You don't need to screw everything in, but you should at least screw and tighten down the few that surround the sensor area. Once you've got it reading properly (best of luck), it's time to put all back together.
You should familiarize yourself with the teardown/reassembly guides out there. Go to ifixit.com and have everything ready to look at. This is the video that I used to guide me, and I watched it through a few times before I attempted it myself. You should be just fine with your phone after familiarizing yourself, but if you have any specific problems or questions, feel free to ask, and I'm all too happy to help.
Planterz said:
You made a wise choice, young padawan.
Yeah, that looks to be the entire front assembly, including the screen+digitizer, already installed in the bezel. Also includes the earpiece plus the speaker grill that you're missing. You'll have to swap over the guts, and that's about it. It's easiest to swap the power and volume rocker buttons first since it's a bit harder to get them where they go if you've got the logic board in the way. Just remember that the contact points need to make a ^ rather than a v when you're assembling it with the screen facing down. Tweezers are good to have, especially if they're very long and even better if they're curved. I also recommend doing this over a clean towel to avoid scratching the screen (there'll probably be a film over it too), and the fluffier the towel the better, to catch the tiny screws from flying and disappearing.
Honestly, getting the 2 halves apart is probably the hardest part. They make specialized tools for this, and often the sellers will include them, but it doesn't look like your purchase includes them (mine didn't either). Something plastic is the best choice, since you're less likely to cause cosmetic damage to the plastic (especially the bezel) if you slip (and you will slip). As I said before, GO SLOWLY. Work it apart a little bit at a time, alternate side to side, starting from the bottom. Eventually you'll be able to pull the 2 halves apart.
The battery will be stuck in pretty good and will need to be pried out. If I were you (and a week or so ago, I was you, I'd pop a new battery in while you're at it. At this point in the phone's life, it's probably had at least a few hundred cycles on the battery and has lost 10-20% of its original capacity. The other comments shouldn't be nearly as hard to get out. Just pry in various points until the piece pops out. Do not force anything. Just work it out slowly. After you pop off the piece that covers the USB port, there's the board that has the port, and that can be slightly tricky to get out. Best way I found is to slip something small and flat (screwdriver?) into the port and push up and out, and the board should come out easily.
Thankfully, there's only 3 different screws used, and they're all easily differentiated from each other. There's the 2 T5 TORX that hold the halves together, the 2 very short screws with wide heads that hold the battery in place, and the rest that hold everything else are all identical to each other.
It looks like on your assembly, it comes with its own adhesives. Everywhere there's a blue film, pull it off and there'll be adhesive underneath. I'd recommend leaving the film on over the part where the sensor/headphone jack module goes until you're sure you can stick it in place with the proximity sensor not acting wonky. Download an app (I used Phone Tester) that can read the prox sensor. FYI, as long as everything is in place, and you've attached the battery, you can boot the phone without replacing the back cover, and test the sensor (just depress the center bit of the power button board). You don't need to screw everything in, but you should at least screw and tighten down the few that surround the sensor area. Once you've got it reading properly (best of luck), it's time to put all back together.
You should familiarize yourself with the teardown/reassembly guides out there. Go to ifixit.com and have everything ready to look at. This is the video[/i] that I used to guide me, and I watched it through a few times before I attempted it myself. You should be just fine with your phone after familiarizing yourself, but if you have any specific problems or questions, feel free to ask, and I'm all too happy to help.
Click to expand...
Click to collapse
Awesome, I saw some cheaper screens but that one notes that its LG compliant etc. I bought a set of tools separately so will have all the stuff needed. Didnt think about the battery, will order one as it does make sense!
Thanks for the info, will update as I go.
If you want to have a working battery like it used to be before removing it, you have to be very patient and extra careful while trying to remove it. Use some heat for the glue and try with something very thin like a nylon guitar pick. In anyway don't bent the battery and don't start from top. It will be easier to first remove the mother board. Iv already destroyed 4 5 batteries while trying to remove them. Sorry for my English, I hope you understand.
Sent from my Nexus 4 using Tapatalk
Sp_Ark said:
If you want to have a working battery like it used to be before removing it, you have to be very patient and extra careful while trying to remove it. Use some heat for the glue and try with something very thin like a nylon guitar pick. In anyway don't bent the battery and don't start from top. It will be easier to first remove the mother board. Iv already destroyed 4 5 batteries while trying to remove them. Sorry for my English, I hope you understand.
Sent from my Nexus 4 using Tapatalk
Click to expand...
Click to collapse
Yea was extra careful, used a little heat. Someone has definately replaced the screen on the phone before but seems to have been careful enough as no screws missing etc, except the lost the little speaker grille
New screen in and working well. The proximity sensor seems to be working but it reports all or nothing rather than varied. Is this correct?
bert682 said:
Yea was extra careful, used a little heat. Someone has definately replaced the screen on the phone before but seems to have been careful enough as no screws missing etc, except the lost the little speaker grille
New screen in and working well. The proximity sensor seems to be working but it reports all or nothing rather than varied. Is this correct?
Click to expand...
Click to collapse
Yeah this is normal.
Sent from my Nexus 4 using Tapatalk
bert682 said:
New screen in and working well.
Click to expand...
Click to collapse
Awesome! See, it wasn't too bad, was it? Ifixit gives the N4 a 7/10 for repairability, and that's pretty high for them. After replacing my N4 screen, friend/coworker asked if I could do the same for his HTC One M7 with a completely shattered, yet functional digitizer. I said "HEEEEEEEEEEELL NO!"
Planterz said:
Awesome! See, it wasn't too bad, was it? Ifixit gives the N4 a 7/10 for repairability, and that's pretty high for them. After replacing my N4 screen, friend/coworker asked if I could do the same for his HTC One M7 with a completely shattered, yet functional digitizer. I said "HEEEEEEEEEEELL NO!"
Click to expand...
Click to collapse
No, not with the correct tools. I will admit had I not bought the plastic tools, tweezers etc I may have struggled.
The battery was my main concern, its really stuck down, even though this had been replaced before and likely a less tacky glue used it was still tough. Had to use some heat to soften it and the "battery cover" has seen better days. Next thing to replace is that, just for piece of mind.
All in all, pretty nice experience, the phone seems more modular that other phones I have taken apart which is nice.

S4 hard to move apps.

I have a s4 from a friend for a cheap prices so i fixed the issues. Also i replaced the glass. And what i can see is if i push some hard on the glass then the glass touching the lcd because of the replacing and there no clue left also is a little scratch on the lcd really small on the right side by the power button. Flashed also cm 13. First thing i try to do is flashing standard hardware again. Did nothing still really weird bug. I can swipe also not a problem also click on apps not a problem only really problem is moving apps. do i need to synced my screen again or something. Or is it because the replaced screen is not direct on the lcd.
If you have touch control problems then it's most probably caused by the improper replacement of the screen/glass.
but how can I do it wrong. I was really carefully on it. I Clean it really good, the uv glue all of it was gone. Then i put double sided adhesive tape on. Then the class on it. I can try to go remove the glass and without the glass look if she recognized my finger better if i want to move a app to a other location
Was uv glue used with the new glass?
No does that really matter. Maybe is the gap between the lcd and the glass.
ps: if i come over rude sorry for that
As a test, remove the glass and then try out the functions.
I'm no expert, but I don't think there should be a gap between the glass and the screen.
The touch controls are connected the screen, not the glass. So if there is a gap between the screen and the glass, touch will not function properly.
But i was thinking you don't need to apply again uv glue. But only the tape was good to go. But i will try with screen off about a week. What i saw today was also weird sometimes i just try to move a app to see you know. But today sometimes it works great other times not work great.
The problem is that you tried taking a shortcut, and your thinking reflects that. The UV glue is required for everything to work properly, so I suspect you'll be using the glue sooner rather than later.
But i am lazy and also when i just push on the glass. There will be a dot. then the touch work better. But thanks anyways i was thinking you don't need the uv glue.
Can i close the thread?
CorBruh said:
But i am lazy and also when i just push on the glass. There will be a dot. then the touch work better. But thanks anyways i was thinking you don't need the uv glue.
Can i close the thread?
Click to expand...
Click to collapse
No excuses. The company selling the glass didn't include it for their health. They included it for a very specific reason: this one.
Stop being lazy and use the glue. That is what it's there for.
Contact a moderator if you want the thread closed.

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