MY HD2's Capacitive screen can do things on its OWN! WEIRD! - HD2 General

I am not much of an expert on this but I suppose capacitive screens respond to some sort of voltage (Like from your fingers).
If my HD2's screen is ON and I lay it face down (Say while in the photo tab), it can actually do things on it's own such as play a movie, or open a picture.
It's very weird like that and I don't know what could trigger it to do that.
This happens on paper and cotton cloth ( the only surfaces I've place my HD2 on).
Can anyone explain this phenomena?

its a ghost

open a new note and try to draw a straight line by using something for a ruler.. like a cd tray, or a pack of sigarettes etc..
the line will not appear, but beneath your ruler there's a messy drawing..
I think it's like you say, electricity... but I'm not sure..

open a new note and try to draw a straight line by using something for a ruler.. like a cd tray, or a pack of sigarettes etc..
the line will not appear, but beneath your ruler there's a messy drawing..
I think it's like you say, electricity... but I'm not sure..
Click to expand...
Click to collapse
One can't help but wonder what would happen if you put it near one of those "lighting balls" that output static elctricity...

lemonspeakers said:
I am not much of an expert on this but I suppose capacitive screens respond to some sort of voltage (Like from your fingers).
If my HD2's screen is ON and I lay it face down (Say while in the photo tab), it can actually do things on it's own such as play a movie, or open a picture.
It's very weird like that and I don't know what could trigger it to do that.
This happens on paper and cotton cloth ( the only surfaces I've place my HD2 on).
Can anyone explain this phenomena?
Click to expand...
Click to collapse
You need to send that back to wherever you got it from straight away. It's knackered and will always be knackered. If you don't send it away to be replaced that you'll be stuck with a useless device.

Related

Customize your magician without painting

An easy way to customize your device.
Just buy selfadhesive vinyl in the color you like.
The procedure is simple.
First of all you will need a hard surface. Open some small holes and attach a vacuum cleaner.
After that make a frame and set the vinyl on it.
Put it in the oven for about one minute until the vinyl starts to deform.
Turn on the hoover and place the frame on the sueface. Of course the parts of your device are between the frame and the surface.
OK, and then...
I mean what about the control buttons, the screen???
with a sharp scalpel you remove the parts that you don't want. For the screen buttons, vamera...
cool! very2 nice..... everybody like it but maybe we need more tutorial/comment about this.
Sorry but i cant find anything else to write, but if you have any questions i will try to answer them. So just post your questions.
I suggest that to do some thing like that you need to dissembled the device, in my case Qtek S100.
Can any one explain how to do that? Thanks in advance.
Ofcourse you must dissasembly the device, because if you don't i think that you will end up with at least a broken screen due to the presure from the vacuum
You can see in this post
http://forum.xda-developers.com/viewtopic.php?t=16288&highlight=disassembly
I have already seen this attachment but I still don’t know how to remove LCD screen from the case. I read that this is very tricky and the screen can be easily broken
Awesome, dude...
A few questions:
1) Where can one obtain the kind of vinyl you use? Hobby stores, automotive stores, something like that? Any brand names to suggest or to avoid?
2) How thick is that foil?
3) At what temperature is the oven? Do you preheat it and put the vinyl in once it has the temperature, or do you put it in and then turn on so it gets heated very gently? I think one could use a hot air gun instead of the oven and only heat the foil in the required spots (corners etc) while the vacuum is engaged.
in picture 16 i made a red circle. There is a white stopper that locks the screen to the case. With a screwdriver try to pull out this stop and the gentle push the screen and then slide it down left to the side of the stopper.
For the vinyls i bought A4 selfadhesive vinyl from ebay. but i don't know the thikcness of it

Oil-like stain reflection on screen

After owning the Touch HD for a full month I just noticed that down the middle of the screen there is something which I can best describe as an oil stain. It looks as if there is a liquid in between the glass/plastic screen and the resistive layer that lays on top of it.
The screen works normally and this "stain" can only be observed if I look at how the light reflects of it.
Any idea what happened?
Hi,
I have a small idear. The TFT-Monitor ist touching your Touchscreen. Probeply you pressed something on your HD, that the two Monitor touch each other, that is why it looks like a Water or Oil spot.
This can happen for example, if you are carrying your HD in your trouser pocket.
If you want to try to remove this spot, you have to turn with your both hand the hd, like the right hand turn with the clock and the left hand turn to the other way.
Sorry, my english is not very good for such a discribing. What I mean is like "to contort" or "to skew (up)". But you have to be very carefully. Before you start, remove the Battery
(I'll be incorporating a clearer explanation along the lines of what Dude10 was trying to say)
The effect you're seeing is IDENTICAL to what causes the colours to appear on an oil film actually!
The way the Touch HD screen works is to have the hard glass (polycarbonate plastic actually as far as I'm aware, but that's not important here!) with a squashy resistive sensor layer on the top.
This resistive layer detects touch as an increase in resistance at the spot that's compressed - be that by a finger or a stylus. Because the upper layer can be compressed, it can also be malformed by stronger than normal pressure, such as an object in a pocket. The effect can be more pronounced if your body heat warms up the screen surface making the screen "set" in position rather than spring back as it should do...
The "oil" effect is cause by the reflections of light from the outermost plastic layer and the outermost surface of the hard screen. When the gap is small enough, these reflections can interfere with each other, cancelling and re-inforcing different wavelengths depending on the thickness - hence the tapering of the screen from thinnest to thickest results in a "rainbow"
Now, why explain all this you may ask? Partly because I like science and it fascinated me in school to learn what caused that effect so wanted to share this! (And this also explains why it only presents itself when you look at the light reflections)
Anyway, more importantly, the solution to your problem is to restore the thickness of that part of the touch layer to it's original uncompressed state.
I'd firstly start trying to hold your finger flat against the top of the phone screen (on flat surface, portraint orientation, finger "left to right") then pressing resonably hard (the hard screen should protect the device - if not you're pressing too hard!) slide your finger down the screen from top to bottom trying to keep an even pressure. This should hopefully even out the surface.
Failing this, as Dude10 suggests, take the battery out and use your thumbs (holding with fingers in the battery well) to press and "smear" around the problem area.
Unfortunately, other than this I don't think there's a particular way to remove the effect totally if it doesn't work...
Obviously it's speculation given that you didn't mention how it happened in the first place, but it does sound like it got knocked or pressed by something either in bag or pocket - maybe even a fold in the pouch
Hope you manage to smooth it out!
WhO_KnOwS said:
After owning the Touch HD for a full month I just noticed that down the middle of the screen there is something which I can best describe as an oil stain.
Click to expand...
Click to collapse
Just a long shot, but:
Sometimes a similar effect can be caused when some moisture has got between the layers of a display.
Have you used the phone anywhere damp or very humid ?
Keeping it somewhere warm and dry might be worth a try?
- Steve
Thanks for all the tips. The issue happened when I had the Touch HD in the pouch and in my pocket - so the idea that it was a fold in the pouch holds water.
The funny thing however is that before I saw all of your replies I was already out the door (with the Touch HD back in the pouch and pocket). 5 minutes later when I pulled it out the issue was gone. I am guessing that I reapplied the exact amount of pressure needed or something like that.
Thanks again for the tips and especially to chaosdefinesorder for the nice explanation.
Thx for helping explanation
5 minutes later when I pulled it out the issue was gone.
Click to expand...
Click to collapse
no, i don't think it was gone. check again under a fluorescent light....
i have this on my diamond. my HD is flawless (till now...)
i phoned to a technician and explain the phenomena and he invited me to replace the screen. when i got there, to my complete amazement and embarrassment the stain was gone. only later i discovered that the stain is visible under fluorescent light only.
chaosdefinesorder said:
Unfortunately, other than this I don't think there's a particular way to remove the effect totally if it doesn't work...
Hope you manage to smooth it out!
Click to expand...
Click to collapse
thanks m8, already tried this (on my diamond) and tried now again with both yr methods. no results. the stain is still there...i think only a replacement can solve it.
here u have the paralel thread in diamond forum:
http://forum.xda-developers.com/showthread.php?t=439410&highlight=oily+stain
you can not do it yourself. the best way will be to go to your seller or straight to HTC, because I think you HD still have warranty.
I repaired ones an Diamond and I can tell you, it wasn´t an easy way.

Magnet attached at the back cover

Hi all! Im in love with this community from day 1
its my 1st thread though seeking for help/advice/your superior knowledge
Thing is that i want to mount my phone in my car using a small magnet attached somewhere at the dashboard and stick my HD2s back cover which is metallic...
my question is: is it possible because of the nature of the magnet to cause problems in the phones operation?? like radio interference or something like this?
looking forward to your answers
i think a magnet may interfere with the touch screen. not positive on this but am sure i`v read somewhere about tiny magnets being in the tip of some capacitive screen stylus`s. a stronger magnet to hold a hd2 would surely result in some type of touch screen interference. but like i said am not a 100% certain.
**** turpin said:
i think a magnet may interfere with the touch screen. not positive on this but am sure i`v read somewhere about tiny magnets being in the tip of some capacitive screen stylus`s. a stronger magnet to hold a hd2 would surely result in some type of touch screen interference. but like i said am not a 100% certain.
Click to expand...
Click to collapse
magnetism will not affect a capacitive touch screen. It will however mess about with the compass!
A capacitive Touchscreen works like a capacitor, whichs field is "spread" over the surface of the screen. By tapping you will change the the resistance of the oscilating resonant circuit, which has a specific resistance (which is related to the dielectric medium, which is changed by your finger)
With this, the phone is able to locate your finger in X + Y axis to find out where you have tapped.
ardsar said:
magnetism will not affect a capacitive touch screen. It will however mess about with the compass!
Click to expand...
Click to collapse
Yes, obviously it will but thats the least of my worries as it wont be permanently attached to the magnet and the times it will, i wont be needing the compass app.
so if thats the only problem i think im gonna give a try to this project...
A capacitive Touchscreen works like a capacitor, whichs field is "spread" over the surface of the screen. By tapping you will change the the resistance of the oscilating resonant circuit, which has a specific resistance (which is related to the dielectric medium, which is changed by your finger)
With this, the phone is able to locate your finger in X + Y axis to find out where you have tapped.
Click to expand...
Click to collapse
Does this mean that a magnet at the back could interfere with the circuit of the screen? and if yes i guess is temporary right?
waiting for more thoughts/input on the subject
Maeffjus said:
A capacitive Touchscreen works like a capacitor, whichs field is "spread" over the surface of the screen. By tapping you will change the the resistance of the oscilating resonant circuit, which has a specific resistance (which is related to the dielectric medium, which is changed by your finger)
With this, the phone is able to locate your finger in X + Y axis to find out where you have tapped.
Click to expand...
Click to collapse
WOW!!!! your talents are wasted on here my friend!! lol
**** turpin said:
WOW!!!! your talents are wasted on here my friend!! lol
Click to expand...
Click to collapse
this is school knowledge...
after some trial and error i found out that the back cover of HD2 although it looks metallic apparently its not coz it can't be attached to a magnet...
That would only mean that it is not made of an iron compound
Benz-Driver said:
this is school knowledge...
Click to expand...
Click to collapse
not in my school my friend lol must say it wasnt the nicest, the teachers had a torrid time! lol i DO know how to use a bunsun burner, is that any help? lmao. Happy Christmas bud.
magnet
I think it is made from stailess steel.magnets do not work on S/S.
ardsar said:
magnetism will not affect a capacitive touch screen. It will however mess about with the compass!
Click to expand...
Click to collapse
Is that true? I know old compasses relied on a magnetised needle to work, but I thought the compass in the HD2 got it's direction from the GPS and the accelerator software??? How would a magnet affect these?
Armes said:
Is that true? I know old compasses relied on a magnetised needle to work, but I thought the compass in the HD2 got it's direction from the GPS and the accelerator software??? How would a magnet affect these?
Click to expand...
Click to collapse
no it's a dedicated compass hardware
Actually, even my notebook apparently hurts it! Looses calibration
yes several times when i opened the compass application arround various interferences it asked me to move it in the usual 8-like movement to calibrate itself..
what about the rest of the phone and memory and SD card wouldnt it affect the storage ? i clecned out my speakerphone with a very small magnet yesterday to get all the lil pieces stuck on it.
and after that my phone(touch pro2) completely froze up and kept freezing up after first input untill i did a hard reset.
**** turpin said:
i think a magnet may interfere with the touch screen. not positive on this but am sure i`v read somewhere about tiny magnets being in the tip of some capacitive screen stylus`s. a stronger magnet to hold a hd2 would surely result in some type of touch screen interference. but like i said am not a 100% certain.
Click to expand...
Click to collapse
i did another little test with a small round magnet around 2cm diameter. i moved it around the back of the phone while looking at the screen and i didnt notice any interference to the screen, at least to my eyes it looked like the magnet did not interfere with the phone at all.
However i moved the magnet to the screen and tried to touch the screen gently with the edge of the magnet and the screen responded immediately and it looked very precise too! i did several presses to the screen with the magnet and in all of them the screen responded exactly as it should, just like it should with the press of a finger, i even wrote some letters as text and it worked great. so i guess thats how they make capacitive stylus..
next time im gonna try to draw on notes application and see how precise it is on that.. (as long as i find a smaller magnet that i can handle better than this one)
i might try to make my own capacitive stylus....
why not....
I have attatched a magnet to the back of my HD2 so i can use my vent mount, i havent noticed any adverse effects.

Recommendations for a stylus please

could anyone share any experiences for a good working stylus for the hd2?
this phone is stupendous but alas i have to use it for work and the software we use requires very tiny touches and signature signing.
have tried the ones on e-bay (rubber topped pencil turned upside down)
which is crap...have now tried the htc and dagi ones with the tiny red dot and they are just not cutting it.
has anyone done any homemade experiments or come across a moe "pointy" stylus
toodle pip amigos
I got some, and they were crap...
davidcampbell said:
I got some, and they were crap...
Click to expand...
Click to collapse
Unfortunately you are all too correct!
With the glass screen!
Put a protector on it and they work!
I have been using the dagi long slim one and it works ok, I do have a screen protector on though so maybe this helps... makes selecting text and writing Chinese characters much easier (I use my hd2 to study/translate Chinese so being able to use a stylus to do this is pretty great)... its a bit fiddly to start with as you need to learn how to use it properly, but once you get used to it everything is ok...
Most of the styli are crap, I need something with more of a point, but that's probably not possible. Still waiting for some sort of battery powered pen that offers pin point precision, a guy can dream right...
i'll try to put a screen protector on as suggested and try...
my problem is it's no good mastering the dagi myself as i have to get customers signatures and most people simply can't use it...
it deffo needs something more pointy.
i'm sure i read somewhere on the forum about a guy who was filing something to a point till it stopped working???
i'm so frustrated as this is the only phone in 8 years that uses my works software flawlessly...except stylii
I have ordered the official htc stylus 400.
arrives in 2 weeks and i'll post comments.
read a review after ordering that it actually scratches the screen!
I guess i should have waited for the 400/2 version!
look on the bright side, will probably misplace it by the second day anyway
I've tried using my DS stylus but that doesnt work, seems like it was made for bigger objects to come in contact with the screen (ie fingers).
ILLEATYAFACE said:
I've tried using my DS stylus but that doesnt work, seems like it was made for bigger objects to come in contact with the screen (ie fingers).
Click to expand...
Click to collapse
It`s not about the size of objects. HD2 has capacitive screen.
"A capacitive touchscreen panel consists of an insulator such as glass, coated with a transparent conductor such as indium tin oxide (ITO).[2][3] As the human body is also a conductor, touching the surface of the screen results in a distortion of the body's electrostatic field, measurable as a change in capacitance. Different technologies may be used to determine the location of the touch. The location can be passed to a computer running a software application which will calculate how the user's touch relates to the computer software."
Wikipedia
thanx for input guys..i least i know about capacitive screens now thanx to kregowski...although i sorta knew.
so if someone could come up with a small pointy thing that gives off some sort of electro staticy stuff...we in..
the search continues
Got the dagi (10 euro from Hong Kong). I am not amused... Touching the screen with the complete tip flat on the screen is annoying to get used to. Often only the side of the tip touches the screen.
When the tip is flat on the screen (which it should) it just does not feel OK. Not "delicate".
Which the screen responsiveness lowered and the tap-reaction time increased (which I did just to be able to get some decent fingertyping results) the dagi does not function adequate. I have to aim more accurate then with my fingers and have to press the dagi on the screen.
Putting the screensettings to default (which I did not try yet) reinstates all the drawbacks in the other functionalities.

HELP Screen Problem, air bubble, or something

im not sure what happened to it, i think its an air bubble or something, anyone have any idea how to fix this ?
touch screen works 100% and it show everything fine u can see the mark a bit when it on lower brightness settings...
i know screen is replaceable i mean the glass ( or whatever it made off) im wondering if i take it of and put it back on will it do the trick...
have a good search, there are a few threads with the same problem. some people have had results by putting a suction cup on teh screen and pulling gently.
i had a small bubble in the middle of my Evo screen, used a car mount windshield suction to pull gently and voila...no more bubble. relief.

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