Develop Bugs

[Q] Random touches with replaced digitizer

I replaced my digitizer on my inc and now it will randomly have touches on the screen. I have no idea why this is happening. I have tried two different digitizers with the same problem. It gets worse, i have tried the first digitizer i got on a second phone and this phone has the same problem.
I am running cyanogenmod and have "show touch" turned on so i can tell when its happening and where. The random touches appear to happen all on there own. I can not reproduce them. They do generally happen in about the same spot/spots each time. There are two general areas and when its registers a touch it moves a little, meaning when it touches it self it dances around a little. how ever if i turn off the screen and turn it back on it usually fixes the issue for a while.
Any idea what may be causing this problem and how to fix it?

Funny, I am having the same exact problem. Replaced my digitizer about a month ago and routinely get the "random touches" or just general unresponsiveness while using my phone.
I just assumed it was a side effect of my less then perfect installation but now I wonder if the digitizer itself is shoddy.

freestylesno said:
when it touches it self it dances around a little.
Click to expand...
Click to collapse
Haha, excellent...
Have you considered the trackpad as the possible culprit? I know when my phone does similar things (swiping homescreens, moving the cursor when typing, etc) it's usually because the trackpad is dirty. I can't really think of why the digitizer (assuming it was properly replaced) would be causing that problem..

My buddy Bob had this happen to his Incredible too when he cracked his screen and had it replaced. He had it replaced 3x through Best Buy because each time it came back it would freak out like that. It turns out that something inside the phone was shorting out to the chassis, it would only happen when he squeezed/held the side of the phone. They ended up just giving him a new one after the third time.

brando56894 said:
My buddy Bob had this happen to his Incredible too when he cracked his screen and had it replaced. He had it replaced 3x through Best Buy because each time it came back it would freak out like that. It turns out that something inside the phone was shorting out to the chassis, it would only happen when he squeezed/held the side of the phone. They ended up just giving him a new one after the third time.
Click to expand...
Click to collapse
Yeah im thinking it could be something shorting but no real way to test. But after many take apart's i seem to have got the screen to a point where it does it like all the time rendering the phone useless. i have put back on the original screen and am seeing if there are problems there. (i got a new plastic housing)
k_nivesout said:
Haha, excellent...
Have you considered the trackpad as the possible culprit? I know when my phone does similar things (swiping homescreens, moving the cursor when typing, etc) it's usually because the trackpad is dirty. I can't really think of why the digitizer (assuming it was properly replaced) would be causing that problem..
Click to expand...
Click to collapse
Yeah i have disconnected the track pad and tried that with no change. and i tried disconnecting the light bar for a try and it would not boot. but i only tried once and i could have messed something else up when i put it back together.
i will report back with how the stock screen does and i'm thinking that will confirm that its the replacement digitizers .

Well the stock digitizer is doing the same thing. So its someting on the board, but i have tried it on two different phones.
So im up for trying just about any suggestion at this point. I have 2 phone and 3 digitizes doing this.

Mine does the same thing. I replaced just the screen awhile back.
I thought it might be related to maybe an upgraded screen family and the kernel not supporting it or something..
Like this post:
http://forum.xda-developers.com/showpost.php?p=15132827&postcount=3626
I usually take off the back and then pull the battery and snap the case back on. Seems to fix the problem until I mess with the battery again.
Anyone know how to see what touchscreen version you have?

ok so i have 3 phones(boards) 3 digitizers. 2 phones are the same hardware version i believe, one isn't. and all three experience this problem. This is even with swapping around the digitizers. I'm thinking that somehow all of these share something similar. All i can think of is me putting them together.
Any idea on what they share?

Just wondering if you ever fixed the problem or got it figured out to some extent?
Same thing is happening on my phone ever since I replaced the screen/digitizer. Took it back apart and cleaned all the ribbon connections and the problem is still there. Thinking it might be a grounding issue possibly since it seems like it goes away (most the time) after I vigorously squeeze the bottom of the phone, by the trackpad and capacitive buttons. But it invariably comes back, and seems to be worse when plugged in to the charger for whatever reason.
Also, since you've also taken apart and reassembled your phone, have you had an issue with the trackpad not sitting flush with the screen? No matter how I reassemble everything, it seems like my trackpad is recessed now and it's even worse when I use the little rubber gasket that was on there originally...

I haven't been able to determine what the problem is, but mine seems exactly like yours. When charging I pretty much can't use my phone random touches everywhere, or it doesn't fully reconize my touch. I just took my INC all the way apart and cleaned everything connections and all. I read somewhere it could be a dirty optical pad so cleaned that good too. Just powered on *Fingers Crossed*

odlay75 said:
I haven't been able to determine what the problem is, but mine seems exactly like yours. When charging I pretty much can't use my phone random touches everywhere, or it doesn't fully reconize my touch. I just took my INC all the way apart and cleaned everything connections and all. I read somewhere it could be a dirty optical pad so cleaned that good too. Just powered on *Fingers Crossed*
Click to expand...
Click to collapse
when you replaced it did you make sure you the ground straps where connected to the screw holes with nothing interfering? i pulled my LCD out of my screen on my dev phone because there was dust under the glass. after i put it all back together i was getting the same thing descried in the OP. so i took it apart and noticed that the thread lock used on the screws pealed off and on the ground straps. so i cleaned them up with Alcohol and a cotton swab. put it back together and haven't had it happen sense.

synisterwolf said:
when you replaced it did you make sure you the ground straps where connected to the screw holes with nothing interfering? i pulled my LCD out of my screen on my dev phone because there was dust under the glass. after i put it all back together i was getting the same thing descried in the OP. so i took it apart and noticed that the thread lock used on the screws pealed off and on the ground straps. so i cleaned them up with Alcohol and a cotton swab. put it back together and haven't had it happen sense.
Click to expand...
Click to collapse
When you say ground straps, are you referring to the two tiny screws that are near the top of the actual screen (after you've taken of the red battery compartment thing and the board)? I remember there being these little metal mesh strips that were in those screw holes that I think I promptly lost after taking the screws out..

k_nivesout said:
When you say ground straps, are you referring to the two tiny screws that are near the top of the actual screen (after you've taken of the red battery compartment thing and the board)? I remember there being these little metal mesh strips that were in those screw holes that I think I promptly lost after taking the screws out..
Click to expand...
Click to collapse
yes. after removing the board on the back of the LCD screen there are 2 straps on the top that ground the screen to the frame. the screws had blue thread lock on the bottom. sometimes it will come off when you remove them.
basically make the head of the screw is clean and the metal straps are clean to make a good enough ground.
EDIT:
if you lost the screws you can try to pick up an eye glass repair kit. the ones used for glasses. they have small phillip screws that might work. you can normally buy the kit at a $.99 store.

I was wondering what the screws were for since it didn't look like they were actually holding anything in.. I didn't lose the screws, just the grounding material, which were those metal mesh adhesive strips. Trying to think of what I may be able to replace that with, maybe just some aluminum foil or something? There has to be some better material, I'm just not thinking of it..

k_nivesout said:
I was wondering what the screws were for since it didn't look like they were actually holding anything in.. I didn't lose the screws, just the grounding material, which were those metal mesh adhesive strips. Trying to think of what I may be able to replace that with, maybe just some aluminum foil or something? There has to be some better material, I'm just not thinking of it..
Click to expand...
Click to collapse
the straps fell off? (the straps are on the back and should be soldered to the drivers on the rear of the screen) i wouldn't recommend aluminum foil. try going to a store like radio shack or any do it your self electronic store and see if the can sell you some fine wire mesh.

Hm, I think we must be thinking of different things, cause these were just tiny little pieces of wires mesh that those screws held into place that were stuck to the metal on the back of the screen. Might have to open it up again and snap a picture or two to clarify if I can't find any other grounding issues, etc.

k_nivesout said:
Hm, I think we must be thinking of different things, cause these were just tiny little pieces of wires mesh that those screws held into place that were stuck to the metal on the back of the screen. Might have to open it up again and snap a picture or two to clarify if I can't find any other grounding issues, etc.
Click to expand...
Click to collapse
yea thats what im talking about. the 2 straps on top that are screwed in. they need to have a clean connection from the strap to the screw heads that it sits on after screwing them down.

Well I'll be damned, I think that was it! I "borrowed" a little bit of that wire mesh stuff from the back of the screen (it's holding down the screen's ribbon connector and covering other things) and put the screws back in holding little strips of the mesh down and stuck to the metal on the back of the screen. I haven't been using my phone much but the phantom touches and vibration haven't come back, crossing my fingers that it stays this way!
Thanks again synisterwolf, mashed your thanks button a bit
To the OP: I'd highly recommend making sure the screen is grounded properly with those two tiny screws towards the top of the screen.

Thanks for the info guys! Does anyone have a pic of this mesh stuff. I think my old screen had it, but the new screen does not..

odlay75 said:
Thanks for the info guys! Does anyone have a pic of this mesh stuff. I think my old screen had it, but the new screen does not..
Click to expand...
Click to collapse
http://www.youtube.com/watch?v=lr4uy9yKqIE
3:30 MARK is what we are talking about.
---------- Post added at 11:32 AM ---------- Previous post was at 11:32 AM ----------
k_nivesout said:
Well I'll be damned, I think that was it! I "borrowed" a little bit of that wire mesh stuff from the back of the screen (it's holding down the screen's ribbon connector and covering other things) and put the screws back in holding little strips of the mesh down and stuck to the metal on the back of the screen. I haven't been using my phone much but the phantom touches and vibration haven't come back, crossing my fingers that it stays this way!
Thanks again synisterwolf, mashed your thanks button a bit
To the OP: I'd highly recommend making sure the screen is grounded properly with those two tiny screws towards the top of the screen.
Click to expand...
Click to collapse
you are welcome. glad i could help and glad i took mine apart. now i can see how it all works. it was hard with my big hands but it was fun.

Back cover crackling

Hello everybody, I've just bought this phone yesterday and I already have a problem. I was using my phone and suddenly the back cover started making noises when pressed in the battery area and sim/sd card slot area. It's looks like the cover somehow won't attach itself completely on the left side where the microusb port is. The right side seems ok except at the bottom where it also makes that crackling sound. For now I have fixed the problem by putting paper between the cover and the phone, but that solution is not really practical because I will have to repeat the process everytime i remove the back cover.
Any ideas what could cause this?

It's just weak build quality, mine has the exact same problem.
This isn't exactly a high-end device afterall.
Sh0m1 said:
Hello everybody, I've just bought this phone yesterday and I already have a problem. I was using my phone and suddenly the back cover started making noises when pressed in the battery area and sim/sd card slot area. It's looks like the cover somehow won't attach itself completely on the left side where the microusb port is. The right side seems ok except at the bottom where it also makes that crackling sound. For now I have fixed the problem by putting paper between the cover and the phone, but that solution is not really practical because I will have to repeat the process everytime i remove the back cover.
Any ideas what could cause this?
Click to expand...
Click to collapse

So no way to fix it unless to replace the cover?
I might just go buy a replacement cover, the squeaking is driving me nuts.

Sh0m1 said:
So no way to fix it unless to replace the cover?
I might just go buy a replacement cover, the squeaking is driving me nuts.
Click to expand...
Click to collapse
Putting a piece of paper inside the cover should mostly fix the problem.

Is the back casing important?

I was wondering what role the back cover of the note 4 is for?
Mostly asking because I might have ruined it when I was trying to put this stupid carbon fiber skin on it -_-;; Why did I think using a hair dryer would be okay... *face desk On the bright side, I'm pretty sure I exposed only the back cover to heat and not the phone itself lol d: If I did I'm dumb and don't deserve this phone >->
Anyways, I think I've accidentally ruined the back cover of my droid inc4g and the phone just never worked the same after x_x The signal sucked and the battery stopped holding a charge... x: I'm using an s-cover case on my note 4 at the moment, but still curious in case I ever decide to use something else for protection s:

nope
Samsung even makes a flip cover case where you remove the back completely, you don't have to worry about the cover.
However, if there was any damage to the phone itself, but they take some pretty good heat.
I live in SoCal and left it a couple times in my car and it was like 107 outside, so!

Check out ebay. You can get all kinds of back replacement plates at good deals.
Eve b customized ones if you prefer

rusty.gh said:
Samsung even makes a flip cover case where you remove the back completely, you don't have to worry about the cover.
However, if there was any damage to the phone itself, but they take some pretty good heat.
I live in SoCal and left it a couple times in my car and it was like 107 outside, so!
Click to expand...
Click to collapse
Probably should let this thread die but...
What is this part of the back cover for? Never really found out I think.. or I just have bad memory :silly:

107? I live I Phoenix and just going outside exposes the phone to 117+ on a regular basis. Heck I have even mistakenly left my phone in the car before and it gets 160+ easy in there. I bet it will be ok

Does your battery cover look like this?

after the first charge my rubber cover for the battery looks bent. i guess i pried it out and to the left instead of backwards towards the strap and that's how this happened. i have big fingers and it wasn't easy for me to pry it open at all. i tried to bend it back the other direction and it almost sits flush now. it doesn't appear the seal around the actual micro-usb port is damaged, just the outer rim standing up you see. wondering if this is normal, and if it will have any negative effects when it comes to waterproofing.

Yes...exactly the same.

Doesn't look right
tuffluck said:
after the first charge my rubber cover for the battery looks bent. i guess i pried it out and to the left instead of backwards towards the strap and that's how this happened. i have big fingers and it wasn't easy for me to pry it open at all. i tried to bend it back the other direction and it almost sits flush now. it doesn't appear the seal around the actual micro-usb port is damaged, just the outer rim standing up you see. wondering if this is normal, and if it will have any negative effects when it comes to waterproofing.
Click to expand...
Click to collapse
It looks to me like your usb port cover is damaged. I can't believe that pulling it out on the left side instead of the back would bend it permanently like that. I would guess it's defective. If the watch is new and still under warranty, I would probably try to exchange it for another.
I've had my SW3 for about 7 months and have taken the usb rubber cover off many times to charge the watch. So far, it has held up well and still looks new. Click on the below imgur link to see a couple of pics of my SW3 compared to yours.
http://imgur.com/a/Es97z

anyone else? i googled pics of this and all the pictures showed it to be bent the same as mine and onatepp
maybe even helpful if onatepp or others have tried this in the water with no damage...

No need to worry in my opinion. Mine looks the same and I bought mine 7 months ago and several times per week I am taking a shower with it after workout.... I do not think you need a perfect seal to have a waterproof watch, the usb port would not let the moisture into the main body. The rubber cover mainly serves to prevent electrical issues when charging, and maybe corrosion.

You can try with yours
Ok, getting serious, I do not think there is an issue with water. The USB port is sealed.
Will not leak water on the inside. The rubber is meant not to let dust/rubbish inside.
tuffluck said:
anyone else? i googled pics of this and all the pictures showed it to be bent the same as mine and onatepp
maybe even helpful if onatepp or others have tried this in the water with no damage...
Click to expand...
Click to collapse

Back of my Nexus makes a click sound?

If I put my thumbs on the screen and my index fingers on each side of the "S" from the Nexus logo and apply a little pressure my phone makes little pop noise like the plastic may be loose. Does anyone else's do this? Could it just be that it is plastic that it makes this noise and there is nothing wrong with the phone?
Thanks for any input.:good:

Bump

If you apply pressure to plastic it's going to deform slightly which would cause a noise like that, yes.

raptir said:
If you apply pressure to plastic it's going to deform slightly which would cause a noise like that, yes.
Click to expand...
Click to collapse
My nexus 5 didn't do that and it's plastic.
Sent from my Nexus 5X using Tapatalk

Mine does it but only if I hold it a certain way and apply pressure in an exact location. Since I don't do this as I use the phone it's a non issue for me. I'd say if it does it when you hold the phone the way you normally would when using it and it bothers you then return it and try again? Mass produced electronic devices will always have inconsistencies and defects. You'll have to decide whether or not it's acceptable.

Thanks guys. I appreciate the input.

git-sims said:
If I put my thumbs on the screen and my index fingers on each side of the "S" from the Nexus logo and apply a little pressure my phone makes little pop noise like the plastic may be loose. Does anyone else's do this? Could it just be that it is plastic that it makes this noise and there is nothing wrong with the phone?
Thanks for any input.:good:
Click to expand...
Click to collapse
Bump

mine does that too. I returned it, thinking it may be a factory defect. But it appears that the new one does that too. Just plastic. Once you put that in a case, you wont' hear clicking

I fixed the clicking sound by applying a strip of insulation tape on the inside of the back cover. Be careful though, just apply one layer, two are too much and lead to a gap between fingerprint sensor and back cover.

For me the clicking sound almost disappeared after 2-3 weeks.

dskvml said:
I fixed the clicking sound by applying a strip of insulation tape on the inside of the back cover. Be careful though, just apply one layer, two are too much and lead to a gap between fingerprint sensor and back cover.
Click to expand...
Click to collapse
Good tip! This made me realize that it's easier to fix rather then go back to the store and return it for a new one (which probably will have the same issue). It look quite easy to remove the back cover in order to mount the tape, even though I'm not that inspired to dissemble a newly brought product. Did you mount the tape's sticky side against the inside of the back cover? Or did you mount it against the battery? I'm not sure it matters.
R

Rickckck said:
Good tip! This made me realize that it's easier to fix rather then go back to the store and return it for a new one (which probably will have the same issue). It look quite easy to remove the back cover in order to mount the tape, even though I'm not that inspired to dissemble a newly brought product. Did you mount the tape's sticky side against the inside of the back cover? Or did you mount it against the battery? I'm not sure it matters.
R
Click to expand...
Click to collapse
I mounted it against the back cover. But i guess it does not matter, as you only need to close the gap between battery and back cover, so there is no more space for the back cover to move.

dskvml said:
I mounted it against the back cover. But i guess it does not matter, as you only need to close the gap between battery and back cover, so there is no more space for the back cover to move.
Click to expand...
Click to collapse
Tried this and moved the tape several times but I realized that the squeaking and clicking sounds kept on coming back. So I cleared it for tape and sent it in for repair. It turned out that my main issue was just at the fingerprint sensor where the plastic back cover were to tight on to the right side of the metal ring around the sensor. Couldn't get rid of it after all, but it sure was a nice try! it might be a solution to other units depending on where the noise is generated.
R