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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.
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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.
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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..
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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*
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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.
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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..
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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..
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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.
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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..
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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.
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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.
Hi all. Quick searching leads me nowhere as there are thousands of problems concerning issues I'm NOT having. Sorry for the crappy 3ds camera pic, it's the only thing I have at my disposal right now besides the phone. As I said in the title, I'm not using a screen protector - this is a stock phone right out of the factory with no accessories, albeit aged a bit.
If you'll take a look, you'll see two screen bubbles. The huge funky-looking one at the top started out looking like the one at the bottom, and grew over a period of a few weeks. The bottom one started out really small and doubled in size to what it is now, but has since stopped.
It's really annoying and starting to bother me, but I was wondering if anyone had experienced similar issues, or has any input whether or not I can maybe fix this thing without having to get a whole new screen/digitizer/whatever. No replacement plans on this phone so gotta figure something else out. Any idea what's going on?
D-Lew said:
Hi all. Quick searching leads me nowhere as there are thousands of problems concerning issues I'm NOT having. Sorry for the crappy 3ds camera pic, it's the only thing I have at my disposal right now besides the phone. As I said in the title, I'm not using a screen protector - this is a stock phone right out of the factory with no accessories, albeit aged a bit.
If you'll take a look, you'll see two screen bubbles. The huge funky-looking one at the top started out looking like the one at the bottom, and grew over a period of a few weeks. The bottom one started out really small and doubled in size to what it is now, but has since stopped.
It's really annoying and starting to bother me, but I was wondering if anyone had experienced similar issues, or has any input whether or not I can maybe fix this thing without having to get a whole new screen/digitizer/whatever. No replacement plans on this phone so gotta figure something else out. Any idea what's going on?
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Is the plastic actually raised up? Can you see it when the screen is off? To me it looks like the digatizer may be going out, but its hard to tell from a pic.
It appears to be sealed and working fine... just has bubbles. I don't really know much about the insides of this phone, but it almost looks as if whatever is behind the digitizer is slightly warped and might be causing some contact with the glass or something like that. Reflections (off what is behind the screen - lcd? Not the reflections off the glass) tend to bend near the bubbles, whereas everywhere else behind the glass is pretty straight.
Essentially it just looks like water droplets or air bubbles forming on the inside surface of the glass, but it's never seen water before. I don't think the digitizer is failing.
Same problem, can I fix this myself?
Hi guys, I have the exact same problem on my HTC Desire. Touch is working fine, the pixels underneath are ok... yet this thing is expanding. What used to be 3 little bubbles near the very corner moved and turned into this amoeba looking thing after a few months.
Here are a few other shots.
Hope someone can let me know the possible verdict? Is it gone? Can it only be repaired by a professional or can I expect to be able to "clean up" the inside of the screen if I dismantle my phone as it is done here?:
http://forum.xda-developers.com/showthread.php?t=1566313
Maybe the liquids from the lcd are boiling from the heat? Sounds dumb but is a possibility
Sent from my ADR6300 using xda app-developers app
Yikes. Mine is still having the same issues. I'm thinking about just tearing it down soon and figuring it out myself. A little nervous working on something with such small components. Any tips for a first teardown? I need to get a T6 torx and I've already looked at a couple disassembly guides, was a while ago though.
As far as I can tell, I will have to replace either the digitizer/glass or the LCD. If it's the latter I'll probably just upgrade the phone cause they seem pretty pricey.
Ok, I did what I said and investigated myself. Unfortunately, I broke my phone doing it.
The problem is the front glass/digitizer. I couldn't get the LCD off, but I pried it back enough to see bubbles through the glass looking from the inside.
I broke my LCD prying on it, now I have an ugly black spot. Guess I'll be buying an LCD and a digitizer now. Anybody have some spare ones, or know the cheapest place to get them?
D-Lew said:
Ok, I did what I said and investigated myself. Unfortunately, I broke my phone doing it.
The problem is the front glass/digitizer. I couldn't get the LCD off, but I pried it back enough to see bubbles through the glass looking from the inside.
I broke my LCD prying on it, now I have an ugly black spot. Guess I'll be buying an LCD and a digitizer now. Anybody have some spare ones, or know the cheapest place to get them?
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There are some digitizers on ebay for about $20 USD. i dont know about LCDs cause i never needed to replace mine but i would assume that they would be a little more expensive. Also, make sure you get the digitizer WITH the bezel because it will make your life a ton easier.
I'd better not touch it then
Sorry to hear about your LCD, D-Lew
Guess I wont be touching mine on my own. I'll definitely break it trying to do the same thing as you. I wonder if it's gonna break my phone if I just leave it as is. I mean, apart from the fact that it is there, it is not affecting the performance at all.
The bubble might get bigger. That's all you have to worry about.
Sent from my GT-P3113 using xda app-developers app
Hi, my Xperia play has a kinda loose back of the screen plate, the part i point in the picture with a red arrow is different feeling, like a bit loose unlike the part i point with the blue arrow.
if i press the part of the backplate pointed with the blue arrow i dont feel any movement at all, but if i touch the part pointed by the red arrow i notice it is more away meaning more detached from the back of the screen than the other and if push it i can feel it moving to the position the other is.
so mi question is, is this normal, and could it cause any problems with normal use, the phone is new, i noticed it by accident.
xp.jpg:
Anyone please
If it's relatively new, call your provider and get it replaced. Should be under warrenty.
Also check to make sure theres no broken clips.
can i tell if a clip is broken without openning the cell? i dont' think is is because it just like half cm that the side market in the red arrow is outter than the blue one, but i can push it foward unlike the blue arrow one that is still.
Heres a detailed photo of the problem, the part in the blue square is good and the part in the red square is kinda misaligned out of the frame (i can push it and it moves to the place it should be, but comes to this position when i stop pushing), could this be serious and possibly get worst or this is something that can normally happen normal can i continue using it without problems, i don't have warranty
what you guys think, looking at the last picture?
Sorry, I know this isn't going to help but, your Play looks way different to mine. Different volume and different L/R buttons. I know there are different models, but I never realised that the actually outwards facing hardware was different.
R800i myself.
i
d31b0y said:
Sorry, I know this isn't going to help but, your Play looks way different to mine. Different volume and different L/R buttons. I know there are different models, but I never realised that the actually outwards facing hardware was different.
R800i myself.
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yeah me neither. +1
EDIT he's got a rubber case on it. lol I bet we both feel stupid now.
Sent from my R800i using Tapatalk
Lol.
So back on topic, please can someone tell me if i should worry of this problem or i can continue use the phone normally without concern:
Heres a detailed photo of the problem, the part in the blue square is good and the part in the red square is kinda misaligned out of the frame (i can push it and it moves to the place it should be, but comes to this position when i stop pushing), could this be serious and possibly get worst or this is something that can normally happen normal can i continue using it without problems, i don't have warranty
Is it in warrenty?
no, do you think is something serious or i can continue using it normally?
Nobody can really tell without actually getting it into their hands. To me, from the pictures, it looks ok to use. But without actually feeling how loose it is I can't say for sure.
Personally, without a warranty, I would continue to use it but just be careful when sliding it open and closed.
If you notice anything other than the loose backplate, then it is time to get it checked out. Eg, dimmed screen, lack of responsiveness to the touch screen etc. Especially around the area where it is loose.
thanks, it's not realy loose just kinda moved half cm outwards of the frame, and it only moves if i push it down to where it is supposed to be. the other side cant be moved because its pressed against the frame, unlike this side.
Yeah, just sounds like a broken clip all right. Like what you first though. I'd say you will be fine.
Thanks.
Could be but i dont feel any broken pieces moving inside, and i havent dropped the phone and i opened from its seal brand new.
but is this is the cause, you think this could have been caused by the plastic case, it's a trident one?
also, can clips be replaced easily by yourself, or the cell have to be serviced?
No, it's more likely a clip that is actually attached to the casing. You are unlikely to hear anything as it would have fallen out long ago. They are quite small.
Eg, like the ones that hold the back of the phone in place.
I can't imagine a case would have done this. It's too.... internal, if you know what I mean. Is it possible it was like this when you bought it? It could have just been shipped badly or something. These things happen.
If it is what I think it is, then the casing itself would need to be replaced and that wouldn't be worth the money.
Thanks again
I had my new xperia play delivered yesterday, and while I'm really pleased with it overall, there's one thing that's slightly offputting. The right trigger button feels far looser than the left, and requires much more force to register when playing a game etc. It also seems to be sitting slightly higher up than the left.
Is there any way to adjust the 'tightness' of the trigger? It's not the end of the world obviously, but it is quite annoying for a new phone, particularly as it's a button that is going to be used regularly.
Apologies if this question has already been asked, but I couldn't find anything about it on the forum.
The screw on the inside adjacent to the button can influence it, but do not screw it too much because might will cause it to become lose. You will need a size T5 torque bit.
eksasol said:
The screw on the inside conjunction to the button can influence it, but do not screw it too much because might will cause it to become lose. You will need a size T5 torque bit.
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Do you mean the screw directly behind the trigger, underneath the battery cover? I thought that could be related, but the screw appears as if it is already as tightly screwed as possible?
theotakuoverlord said:
Do you mean the screw directly behind the trigger, underneath the battery cover? I thought that could be related, but the screw appears as if it is already as tightly screwed as possible?
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I haven't look at it very much, but if you unscrew them all and pry the back off, you will be exposed to the entire mechanism and see if you can adjust it.
eksasol said:
I haven't look at it very much, but if you unscrew them all and pry the back off, you will be exposed to the entire mechanism and see if you can adjust it.
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I think I'll try this, though I'm not really enthusiastic about taking the back off entirely. Would this invalidate my warranty?
theotakuoverlord said:
I think I'll try this, though I'm not really enthusiastic about taking the back off entirely. Would this invalidate my warranty?
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Well in that case maybe you should get an exchange, but really they would hardly notice if you just unscrew it and put it back and its quite easy to do. If you bought it new and the factory sticker on the box was not removed, then it wouldn't be acceptable to have this issue. If you didn't have a factory sticker then its wasn't new.
Unfortunately this is not uncommon, my R trigger is *slightly* more sensitive than my L trigger, anyone playing on my phone would never notice it unless they were purposely looking for something to complain about. My suggestion to you is to hold down the R button and insert the edge of a trading card and run it thru gently taking any dust or dirt with it, then get a damp microfiber, take off the battery cover and wipe down the R button. I do this every couple of months to keep my triggers clean
Sent from my R800x using xda app-developers app
eksasol said:
Well in that case maybe you should get an exchange, but really they would hardly notice if you just unscrew it and put it back and its quite easy to do. If you bought it new and the factory sticker on the box was not removed, then it wouldn't be acceptable to have this issue. If you didn't have a factory sticker then its wasn't new.
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It does have the factory sticker, but getting a replacement this early on is quite annoying. I think I'll try adjusting it, and if that has no effect, I'll get it replaced. Thanks for your help.
Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!
wi11ow said:
Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!
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Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.
graphdarnell said:
Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.
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I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!
wi11ow said:
I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!
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Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.
graphdarnell said:
Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.
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I don't know about the mechanics of the touchscreen, so all of this is helping me
I took a look at that tool, and I posted the result of drawing on imgur: paste "oyIt3bg" after imgur.com (I'm apparently still too 'new' to post links, sorry about that). It is clearly one band, very consistent. I think I should probably talk to the shop I got it from and ask for a replacement. Which sucks, because this particular parts took 3 weeks to even get here. Anyhow, glad I know what the problem is now. Again, thanks for all your help, I appreciate it
Hello fellow dutchie,
I have experienced this problem on my Nexus 4, and after having replaced the LCD+digitizer I also had issues with touch responsiveness in exactly the same areas. As silly as it would sound beforehand, it doesn't seem to be the screen or digitizer. Best... to give up.