Replacement screen.... calibrate touch possible? - Xiaomi Mi A1 Questions & Answers

So I got a new screen, but I think it's a cheap crap thing. Touch accuracy is way off, it seems too sensitive or something. It scrolls when I just want to tap, for example, and I keep hitting the wrong letters.
Is there such a thing as touchsvreen calibration on modern devices? Or did I just get a dodgy digitiser?

CosmicDan said:
So I got a new screen, but I think it's a cheap crap thing. Touch accuracy is way off, it seems too sensitive or something. It scrolls when I just want to tap, for example, and I keep hitting the wrong letters.
Is there such a thing as touchsvreen calibration on modern devices? Or did I just get a dodgy digitiser?
Click to expand...
Click to collapse
I think it's a defective product, maybe you can ask for a refund or replacement

AndreaHH90 said:
I think it's a defective product, maybe you can ask for a refund or replacement
Click to expand...
Click to collapse
Yeah nah not gonna happen, took two weeks to get here and was only $40 anyway lol.
I don't know if it's placebo but I did run a Touchscreen Calibration app on the Play Store which seems to have helped. Not even sure what it does, but lots of other positive reviews also have similar results.
Only downside now is that it's sometimes not sensitive enough, but I'll get used to that. At least now I can type properly.

If it is too sensitive, what about using some screen protector? Maybe it will lower the sensitivity?

TrueMS said:
If it is too sensitive, what about using some screen protector? Maybe it will lower the sensitivity?
Click to expand...
Click to collapse
Maybe. I do have the one that came with the phone.
I dunno, sometimes it's too sensitive and other times it's not. I think it's just a cheap digitiser. But I might try that anyway, good idea.

Related

Story on Engadget about the screen coming loose

Mine apparently is doing it also I didnt notice it until I looked in the dark. Mines mild right now, but its def coming up...
http://www.engadget.com/2010/06/13/htc-evo-suffering-from-glass-separation-issues/
psufan5 said:
Mine apparently is doing it also I didnt notice it until I looked in the dark. Mines mild right now, but its def coming up...
http://www.engadget.com/2010/06/13/htc-evo-suffering-from-glass-separation-issues/
Click to expand...
Click to collapse
not a big surprise. probably exactly the same crappy screen adhesion problems that were leading to all the dust under the nexus screens... :/
mine is starting to do it as well, I can feel it slightly raised above the bezel
What problems will manifest due to this problem?
regards
qu1nn
What problems will manifest due to this problem?
regards
qu1nn
Click to expand...
Click to collapse
Dust under the screen. And you can see light leaking out of the bottom of the phone
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Sent via the XDA Tapatalk App
Wow this is totally sh*tty
I just placed my order for the Evo and should be receiving it sometime this week.
I am wondering if maybe keeping the phone in a tight-fitting silicone case might help to reduce any possible "DISPLACEMENT" of the screen
glad to see this is getting media attention. i'm sick of htc and their crappy quality control. i went through this whole thing with my hero already...
and yes, my screen is coming apart too. it definitely wasn't like that when i got it last week.
redrazr7791 said:
Wow this is totally sh*tty
I just placed my order for the Evo and should be receiving it sometime this week.
I am wondering if maybe keeping the phone in a tight-fitting silicone case might help to reduce any possible "uprising" of the screen
Click to expand...
Click to collapse
Yeah can't have the screen gathering up and revolting
mrono said:
Yeah can't have the screen gathering up and revolting
Click to expand...
Click to collapse
I couldn't think of another word to use
If HTC continues to mass produce phones that fall apart because of faulty manufacturing...then the customers just might revolt
Dang it!!! mine starting to raise up as well I love this phone and Sprint service but I'm afraid the problem will worsen up as the time passes. I'm not the type to switch devices after every new released and perfer to hang to something until I feel it's not doing what I ask it to (still have HTC Uni, 8525, Treo 750 and Axim x51v).
This and the 30 fps capped is my only main concern about this phone, especially this screen separation (more light leakage or dust problem). The rest of the problem doesn't really bother me much such as the laggy touch input, improperly grounded screen and other problem doesn't apply to my device.
Is it worth the hassel of exchanging it hoping to get one without the screen separation or do they all have this problem? I'm hoping the newer hardware version (version 3) doesn't have this sort of problem, mine is hardware version 2. What you guys think?
I have been noticing more and more light leaking. I thought at first I was maybe just getting paranoid (still possible) but I saw a line about 1.5 cm long along the lower left side last night... That was definitely not there before.
What should I do? Would getting the TEP plan be prudent at this point, to cover this issue if/when it gets worse? Or would be the kind of thing HTC would be more... lenient about replacements?
Think the hairdryer method will work like it did on the Nexus? My nexus had this issue and the hairdryer method fixed it up permanently.
booloobunny said:
Think the hairdryer method will work like it did on the Nexus? My nexus had this issue and the hairdryer method fixed it up permanently.
Click to expand...
Click to collapse
Doesn't hurt to try. If it worked on the NX-1, it might work again
redrazr7791 said:
Wow this is totally sh*tty
I just placed my order for the Evo and should be receiving it sometime this week.
I am wondering if maybe keeping the phone in a tight-fitting silicone case might help to reduce any possible "DISPLACEMENT" of the screen
Click to expand...
Click to collapse
I know this is off topic but...
How are you getting yours that fast? Where did you order from
booloobunny said:
Think the hairdryer method will work like it did on the Nexus? My nexus had this issue and the hairdryer method fixed it up permanently.
Click to expand...
Click to collapse
Yeah I actually just tried this and it worked pretty well only a little of leakage left, I figure I'll seal it up some more when I have the time and Im pretty sure I did not hold it down long enough to let it cool effectively. but the parts that are still down work like a charm. way better than having to go back, lose all your apps, headaches of customer service, etc.
BigBallin said:
Dust under the screen. And you can see light leaking out of the bottom of the phone
-------------------------------------
Sent via the XDA Tapatalk App
Click to expand...
Click to collapse
--------------
So this is the reason I see light under the buttons when their off and the screen is off, and its dark in the room? because my screen seems to be holding up well, and I have it in my pocket all day, no case or screen protectors. then again, I haven't been messing with it, trying to apply things or mods to it.
Hair dryer, bubble gum, tape and what else?! These are high-end devices (Evo Nexus One, etc) and they should NOT need a MacGyver handbook to keep them together after days of ownership. HTC needs to do right by us from the design stage period!
Dear Babies,
This is a site about hacking phones. Stop *****ing and use your brains for a change. Get some black silicon caulk from Lowes. Rub a small small amount in the crack where the buttons meet the case where the light leaks. Congratulations, your phone can now be left in the desert for 10 years and nothing will get through that seam including light... I swear, you guys can spend all day rooting phones but cant use some damn common sense to fix the hardware itself. I had tons of light leakage when i got the phone. Zero now, and you cant tell i did anything to it.
AshMa said:
HTC needs to do right by us from the design stage period!
Click to expand...
Click to collapse
This is very true, but there seems to be a gray area when it comes to (S*** HAPPENS and a bug that can be fixed)... And it seems to get grayer everyday.....
hair dryer seems to have worked fine on my evo

[Q] My HTC HD2 is going berserk

Since about 2 months, my HTC HD2 sometimes runs into a strange behavior.
It's like some invisible fingers are touching the screen very quickly, triggering apps, menus, and sometimes calling people!
The only way to stop that is to restart the phone (but when the HD2 starts to behave that way, it's difficult to restart it, as these "invisible fingers" are still competing with MY fingers!).
I don't know what caused the problem in the first place, and I don't know what triggers the problem when it happens.
Is my HD2 out of order?
Thanks
Gz
It could be that your touchscreen is too sensitive and your sweat from your fingers is triggering it; Did you try cleaning the screen, your hands and using a screen protector?
your digitizer is going to die very soon
By "digitizer", you mean the touch glass?
Did it happened to you before?
Why so many of your phones had their glasses cracked?
Thanks
adempozhari said:
your digitizer is going to die very soon
Click to expand...
Click to collapse
It's very probable to happen...
Try to massage the screen around the corners especially above the buttons.
There is some kind of "glue" to prevent contact with metal but if its old or used it could make this problem.
Maby you can trigger it or at least find the point where to press to make it stop.
=> using a heating fan (warm not hot!) to vaporize water could help too maby. No warranty here!
dertester123 you may have found the real cause of the problem, but I'll have to test more before I can confirm.
Cheers.
Gz
i have been having the same problem lately and i must say, i'm pretty sure it's about the sweaty fingers! i have read on other sites that the capacitive (?) screen is too sensitive and that many are experiencing these problems, especially during summer!
JimWest7997 said:
i have been having the same problem lately and i must say, i'm pretty sure it's about the sweaty fingers! i have read on other sites that the capacitive (?) screen is too sensitive and that many are experiencing these problems, especially during summer!
Click to expand...
Click to collapse
Just place some waterdrops on the display or use it with fingers that you put some lotion on....
Problem is when it gets under the display, but thats rather uncommon i hope;D
I case its just just sweaty fingers, what are pants for?
I have the same problem but it only happens in my music app. Could this be causedby a virus of some sort?
vietnameseJames said:
I have the same problem but it only happens in my music app. Could this be causedby a virus of some sort?
Click to expand...
Click to collapse
are you running android ics? In ics they changed the input slightly i heard, and maby its not ported correctly...
When using another music app or switching to generally other apps while music plays everything is okay?
I dont think its a virus or something, most of them want to spy or change userdata and not annoy you
I thought I had found the cause of my problem, but I can't confirm it, as this problem hasn't appeared since the middle of May, when I followed dertester12's advice to massage the screen on the corners!
But I noticed a spot in the middle of my touch screen where the "glass" seems to "touch" or to be glued to something underneath it. This spot is till here today, but despite of that, the problem is not occuring now. I'll try to attach photos of that.
So to sum it up, I'm still not sure about what caused the problem...
grendizerus said:
I thought I had found the cause of my problem, but I can't confirm it, as this problem hasn't appeared since the middle of May, when I followed dertester12's advice to massage the screen on the corners!
But I noticed a spot in the middle of my touch screen where the "glass" seems to "touch" or to be glued to something underneath it. This spot is till here today, but despite of that, the problem is not occuring now. I'll try to attach photos of that.
So to sum it up, I'm still not sure about what caused the problem...
Click to expand...
Click to collapse
Did you disassemble your screen before?
Sent from my T9193 using xda premium
Nope. You think something got under the touch screen?
hengsheng120 said:
Did you disassemble your screen before?
Sent from my T9193 using xda premium
Click to expand...
Click to collapse
I'll dig out the topic.
Hangsheng I have the same problem as described at the beginning, but mine handset had replaced touchscreen with lcd panel.
What it could be the cause of this behaviour?
fikthor said:
I'll dig out the topic.
Hangsheng I have the same problem as described at the beginning, but mine handset had replaced touchscreen with lcd panel.
What it could be the cause of this behaviour?
Click to expand...
Click to collapse
Well the touchscreen must be isolated from the display. Therefore they put some blue glue at the area over the buttons where the HTC logo is. For me I used alcohol to clean the touchscreen as I replaced it and had the problem that when pressure was added the layer of glue was to thin to isolate and gave me fake inputs.
You can test by massaging this area.
Also the contacts on the backside of the screen must be isolated to the housing and the screen. I could think that when you soldered the stock isolation thinned out too..
Last but not least touchscreen, display and housing must be grounded correctly. Therefore all parts are wrapped in metallic foil at the edges... To connect them..
As the touch screen is very sensitive to even little currents its often hard to find the problem as it could also be a totally different cause.
All the above mentioned points should be checked and are relatively easy to fix. But it needs total disassembly what - especially to old devices- has a risk.
Risks are:
That damn flex cables are old and tend to break. The buttons have small tapes on top that come off easily and never go back again... And many more things that break when dis- and reassembled to often.
Sometimes it's cheaper to sell defect HD2 and buy new/used one..
On eBay you often get very good prices for defective HD2..
Gesendet von meinem HTC HD2 mit Tapatalk 2
Odp: [Q] My HTC HD2 is going berserk
The thing is every issue dissappear when it's on WinMob. I cannot pass this behaviour so decided to switch handsets. HD2 was very good phone.
Sent from my GT-N7100 using xda app-developers app

[Q] What kind of Screen Defect is this?

Hello,
After two monts of perfect usage, yesterday I saw two blue areas on black bachground. I have tested several dead pixel repair apps but no chance. What kind of defect is this?
Did something hit your screen?
peneoark said:
Did something hit your screen?
Click to expand...
Click to collapse
i concur it seems like some pressure has been applies to your screen,... remember pressing the screen on an lcd? colour blurs.
chismay said:
i concur it seems like some pressure has been applies to your screen,... remember pressing the screen on an lcd? colour blurs.
Click to expand...
Click to collapse
The only time I have seen that is with screen pressure "accidents".
Either replace the screen/digitizer yourself, or send it in for repair if it bothers you.
peneoark said:
The only time I have seen that is with screen pressure "accidents".
Either replace the screen/digitizer yourself, or send it in for repair if it bothers you.
Click to expand...
Click to collapse
The tablet is used exclusively by my boy for gaming. Thanks for your answers!

Permanent smudging (spot) on the glass

Device #1)
I just got my S4 and it appears there is smudging around the home button, where my thumb presses it. I don't use a screen protector but this has nothing to do with that. It is like a grease spot that doesn't come off. Anyone have this before? Should I return it?
** I went to the Sprint store (within my 14 days) and they exchanged my device. **
Device #2)
I am kind of worried this is going to happen again. Has anyone seen this before?
Not it to my knowledge. I'd keep returning the device until they get you one that's good.
Beezer80 said:
Not it to my knowledge. I'd keep returning the device until they get you one that's good.
Click to expand...
Click to collapse
I'm starting to see what looks like grayed out smudges over the soft keys. Is that normal?
Wash your dirtyass fingers before you use your device.
I would lol at that but it is really hard to explain. It is like the screen over the soft keys has a smudge over them. If you wipe it down real good you can't really see them. But, and to your point, if the screen gets a bit greasy you can see what looks like smudged or worn down spots over the soft keys. I really wish I could take a picture....
jeffreynothing43 said:
I would lol at that but it is really hard to explain. It is like the screen over the soft keys has a smudge over them. If you wipe it down real good you can't really see them. But, and to your point, if the screen gets a bit greasy you can see what looks like smudged or worn down spots over the soft keys. I really wish I could take a picture....
Click to expand...
Click to collapse
I'll bite one more time. Post a picture of what you're talking about.
soft key permanent on screen
Beezer80 said:
I'll bite one more time. Post a picture of what you're talking about.
Click to expand...
Click to collapse
This is the best I can do. It's easier to see (obviously) in person. Now this is not grease from my hands. This is a dead ringer outline of the soft keys that is getting progressively more prominent. I've been using this phone for 5 days only.
That looks like burn in from them being on. Just keep having it replaced.
Beezer80 said:
That looks like burn in from them being on. Just keep having it replaced.
Click to expand...
Click to collapse
This is my 3rd one and today is day 13...I might get the LG G2. I'd hate to get another messed up device and be stuck with it. The one prior had this huge spot near the bottom of the screen where there was no oleophobic coating. The first one had a dead pixel and soft keys would not light up.
mine hasn't done anything like that. i do have a screen protector on, though.
ymf331 said:
mine hasn't done anything like that. i do have a screen protector on, though.
Click to expand...
Click to collapse
A couple people have suggested that to me at Sprint. But for 600$ (I bought it outright from them) and Gorilla Glass 3 I should be able to go more than a week without something happening to it. I had the sluggish and buggy Galaxy Nexus for a year without a screen protector and it never so much as scratched. Just seems bad to me. I dunno...maybe I am too picky.
Stop being so anal and use your damn phone. This is just stupid and there is nothing wrong with the phone. Someone had to say it so I did. Rant Over!
cruise350 said:
Stop being so anal and use your damn phone. This is just stupid and there is nothing wrong with the phone. Someone had to say it so I did. Rant Over!
Click to expand...
Click to collapse
I actually exchanged the phone yesterday so I'm going to unsubscribe from this thread...but your reply wasn't very helpful or nice. I bought the phone out of pocket for $600, I expect it to be of good quality. There's nothing wrong with nitpicking something that costs that much money.
I agree.. you tell him.i expect the same when I put out that much money...
Sent from my SPH-L720 using xda app-developers app
yeah, i didn't mean to imply that you were nitpicking or anything. only that you seem to have bad luck.

Touch problems with video proof

So, as we all know, some OPO's have touch issues. Many are because of software and many are because of hardware. My OPO suffers from both, and here are two screencasts as proof. I muted the sound with Movie Maker since it's not relevant to what I'm showing you.
The phone is lying flat on my desk and I start off by adding one finger from my right hand, then another finger. Then I add a third finger from my left hand and start moving it around as you can see in the videos, all while keeping my right hand fingers perfectly still. Without a charger or USB connected (to my computer), the touch is crazy. With a charger or USB, the touch is perfectly fine. This is with the latest touch firmware, might I add, and the touch was just the same with the previous versions. Definitely a hardware error (grounding?).
Touch without charger or USB:
Touch with charger or USB:
That's is interesting mate, that's quite a find tbh, would charging and not charging be a bug in the firmware....
Sent from my A0001 using Tapatalk
Just had a go myself. I get the issue after using 5-6 fingers, more so when the device is flat (odd). When I charge the phone and do the test it is gone completely. Only difference in my situation is that it doesn't crop up when I'm typing, I don't suffer from ghost swipes etc when doing normal browsing or playing games. It functions as good as my M7 until I start to use 5+ fingers on the screen
jojohnson250 said:
That's is interesting mate, that's quite a find tbh, would charging and not charging be a bug in the firmware....
Sent from my A0001 using Tapatalk
Click to expand...
Click to collapse
No idea, tbh. It seems that the ghost swipes are gone with the latest firmware and that I can type quickly. Seemingly so after directly booting the phone up, at least. My OPO lies shutdown on my desk most of the time since I use my S5 daily. Just knowing about this issue bothers me a lot, though. I wonder what OP will reply in the mail I sent them. They (a support guy) asked me to send them videos of the problem so that they could help shedding some light as to what issues I'm facing.
I tried it as well when you plug it in I can use 10 fingers and no issues without plugging in anything above 6 screws up :/
Sent from my A0001 using Tapatalk
Galactus said:
Just had a go myself. I get the issue after using 5-6 fingers, more so when the device is flat (odd). When I charge the phone and do the test it is gone completely. Only difference in my situation is that it doesn't crop up when I'm typing, I don't suffer from ghost swipes etc when doing normal browsing or playing games. It functions as good as my M7 until I start to use 5+ fingers on the screen
Click to expand...
Click to collapse
jojohnson250 said:
I tried it as well when you plug it in I can use 10 fingers and no issues without plugging in anything above 6 screws up :/
Sent from my A0001 using Tapatalk
Click to expand...
Click to collapse
I wonder if all OPO's have this grounding (?) issue.
Theshawty said:
I wonder if all OPO's have this grounding (?) issue.
Click to expand...
Click to collapse
Probably. The fact that it doesn't happen to everyone unless they use a lot of fingers at once is more than likely the reason some say they don't have it. If I didn't install the multitouch test app I'd assume the screen is perfect since I never use more than two fingers on the screen at once anyways
Galactus said:
Probably. The fact that it doesn't happen to everyone unless they use a lot of fingers at once is more than likely the reason some say they don't have it. If I didn't install the multitouch test app I'd assume the screen is perfect since I never use more than two fingers on the screen at once anyways
Click to expand...
Click to collapse
Then my One must be pretty darn bad since it started acting up after only four fingers. Not that I'd ever need that many simultaneously for anything other than touch testing apps, though. I think I most likely have a general touch issues as well as most issues resolve themselves after a reboot but come crawling back slowly.
Theshawty said:
Then my One must be pretty darn bad since it started acting up after only four fingers. Not that I'd ever need that many simultaneously for anything other than touch testing apps, though. I think I most likely have a general touch issues as well as most issues resolve themselves after a reboot but come crawling back slowly.
Click to expand...
Click to collapse
You might be better off not purchasing any device with the "One" name regardless of whether it is HTC or OP based on your track record lol. It does sound like general touch issues though. Good thing you have the S5. Personally I'd keep the phone though and have it as a spare when/if newer updates help to alleviate the issue.
Galactus said:
You might be better off not purchasing any device with the "One" name regardless of whether it is HTC or OP based on your track record lol. It does sound like general touch issues though. Good thing you have the S5. Personally I'd keep the phone though and have it as a spare when/if newer updates help to alleviate the issue.
Click to expand...
Click to collapse
Yes, I think so too. I had it up for sale but took the ad down as I felt like keeping it instead. Besides, the touch seems better with the new "firmware" and might just "do" as a spare. Would be nice testing some CM-infused Lollipop too.
Theshawty said:
Yes, I think so too. I had it up for sale but took the ad down as I felt like keeping it instead. Besides, the touch seems better with the new "firmware" and might just "do" as a spare. Would be nice testing some CM-infused Lollipop too.
Click to expand...
Click to collapse
Good, sounds like the best course of action to me
Galactus said:
Good, sounds like the best course of action to me
Click to expand...
Click to collapse
Saves me from the hassle of getting rid of a device that I don't really need to get rid of. I've already earned back what I paid for it anyway.
Sent from my SM-G900F using Tapatalk
Theshawty said:
I wonder if all OPO's have this grounding (?) issue.
Click to expand...
Click to collapse
Have you try with COLOR OS
Same problem?
LOL i posted about USB connected a week ago.. And best is try to connect USB cable (only cable) without computer. Multitouch will work properly. I had that issues but they gone dunno why.
gerciolisz said:
LOL i posted about USB connected a week ago.. And best is try to connect USB cable (only cable) without computer. Multitouch will work properly. I had that issues but they gone dunno why.
Click to expand...
Click to collapse
Shouldn't it be possible to built a small plugin which then serves as a dust cover for the micro usb connection, which also cures all multi-touch issues... i smell money in the air :laugh:
AcmE85 said:
Shouldn't it be possible to built a small plugin which then serves as a dust cover for the micro usb connection, which also cures all multi-touch issues... i smell money in the air :laugh:
Click to expand...
Click to collapse
LOL yep i thought about it too.. But better thing should be to find this not grounded part and physically connect it.. Dunno maybe bend some metal part of usb just 1 milimeter can help but maybe not.
I removed my case and as i had the phone in my hands the touch was perfect. The touch was perfect when I had earphones plugged in.
Sent from my SM-G900F using Tapatalk
gerciolisz said:
LOL yep i thought about it too.. But better thing should be to find this not grounded part and physically connect it.. Dunno maybe bend some metal part of usb just 1 milimeter can help but maybe not.
Click to expand...
Click to collapse
Someone tried something like this
http://forum.xda-developers.com/showpost.php?p=55195874&postcount=1783
Unfortunately he did not post any pictures. Side effects like increased heat could come with this modification.
Curious, do you have the hardware buttons activated? It maybe in my head but I just tried this and the touchscreen seems better (no random movement nor false presses or merges) when the hardware buttons are disabled. I dont really find the touchscreen a problem but it may help you guys, I am sticking with software buttons now (always did with my nexus ) and cant complain now!
hicks12 said:
Curious, do you have the hardware buttons activated? It maybe in my head but I just tried this and the touchscreen seems better (no random movement nor false presses or merges) when the hardware buttons are disabled. I dont really find the touchscreen a problem but it may help you guys, I am sticking with software buttons now (always did with my nexus ) and cant complain now!
Click to expand...
Click to collapse
The problem here is that the touch panel doesn't properly ground to the back cover for some strange reason. Notice how the touch works brilliantly in my other video? Yeah, that's because I now grounded the phone by physically touching the back cover (I had to take off my flip case for this). It also grounds as it should when there's some electrical current entering the usb port in some way (either by a wall plug charger or a USB cable connected to your computer).
It has to be bad grounding. Nothing else makes sense.

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