[Q] how does the touch screen work ? - Epic 4G Q&A, Help & Troubleshooting

After the sprint service reset my phone and killed my calender, I got an automated message asking if my problem was resolved. Well then I pulled over and brang up the dialing pad on the screen and started trying to press the numbers but as with 90% of the time they do not work. I started licking my fingers and pressing on the display and started *****ing and my 17 year old daughter asks my what I am doing , she than says why don't you calibrate my display. That would be great if there was one! She has. An lg touch and hers has one but mine don't she asks? Now I need to know how to make mine work before I poke my finger through the screen. I can't even hang up the phone 50% of the time. Is there a secret way to use this touch screen or do I just have to use the right finger and licking my fingers to make it work just ain't right.

Capacitive touch screens, do not need to be calibrated, unlike their cheaper cousins, and if you are having accuracy issues you need to either Odin the phone or bring it to Sprint and let them do it.

http://en.wikipedia.org/wiki/Capacitive_sensing

Licking your fingers?!? That's totally unnecessary good sir/ma'am. Capacitive screens work by picking up the electrical charge that we have in our bodies. So when we touch the screen, that charge is sent to the display, the sensor and cpu do their thing and figure out where the screen was pressed. That's why you can't use the screen with gloves on (like winter gloves). Anyway, it just sounds like the phone is acting wacky.
Have you just tried rebooting to see if that fixed it? Or turning the screen on and off a few times? My phone acts weird on the lock screen sometimes and just turning off the screen fixes it.
There are a few threads here that address accelerometer problems but if the screen is just not picking up your touch, you may want to take it to Sprint.

that would be sir and it is just one of many problems my phone has. I reset it ,sprint reset it, I am crossing my fingers I got a dud . I was suckered onto the shorter waiting list and had the phone since launch day and in the beginning it was told to me by radio shack that android 2.2 was shortly comming and was going to fix all these problems I am having. I love the phone when it is working correctly but now I am just tired of the issues and promisses not being fullfilled. I read the article in the posting and it explaines different kinds of capacitive tec, gut wich one does the epic have. my wifes epic is so sensitive that it senses 1/4 inch away at times. mine is a luck of the draw and her phone is not mine so I dont use hers enough to see if its really better. I *****ed to sprint enough ,and it took this long, that they are sending me a new one. I doubt they are sending me a new one and expect they are sending me a refurbished one to test. I want to make sure its not something like my fingers not having enough energy to sense or cosmic rays are making my page back button go wacky by itself at random when texting or browsing.

Lol, if cosmic rays are bombarding your phone, we all have a lot more to worry about than the responsiveness of your phone! Sounds like you may have just gotten a bad phone. I would be pissed if Sprint tried to give me a refurb phone. There's a command somewhere in the scripting history on the phone that will tell you whether the phone is refurb. I don't know how to do that. I bet someone on this site does though. I guess the bottom line though is that the phone just needs to work.
And to your wife's phone, yes, the phone can be extremely sensitive. Sometimes, I swear that I didn't touch the screen but the screen registers a touch just because my finger was really close to the screen.
Finally, you may want to flash your phone. If you are not comfortable using ODIN or adb, get Sprint to do it. And not just a factory reset through the settings menu. I mean resetting the phone through recovery or download mode. Good luck.

Related

Screen shuts off when slid up!

So... all of a sudden, everytime i slide the screen up, it shuts the screen off. I slide it back, hit the power button a few times, then it turns back on?
NRG GTX 5/9 release
TMO USA
Is my screen busted?
Power off your phone, remove the battery and then put it back in, making sure it fits in there snuggly.
That has happened to me, and removing/replacing the battery fixed it.
Yes, as Amy noted this behavior is often attributed to the battery not sitting exactly right in the compartment. Sometimes just popping it out and back in is enough, but some people have reported needeing to slip a small piece of paper or something similar under the battery cover as well to help keep it snug. (It seems that the sliding motion can be enough to shake the battery off the contacts if it's not secure enough).
Let us know if that clears it up
okay. what the deuce.
my tp2 just literally started doing the same.
earlier today it was perfectly fine.
but now.
i slide out the keyboard and the screen goes blank.
i tried the remove battery and restart.
didn't help.
i tried the paper between battery and cover.
didn't help either.
the screen only goes blank when completely slid out.
if i hold it open just before completely open the screen is still on.
any suggestions?
thanks.
Yea, none of those things worked. However, keeping the battery snug helped with the issue of not hearing anything through the handset.
It honestly sounds to me like both of you are dealing with a loose connection between the screen and the motherboard somewhere, either power or video feed, can't say for sure which. Unless you're willing to disassemble your rhodium (which isn't impossible, just complex), it sounds like it's time to send it to a service center (for AT&T) or to HTC, since that would be a warranty repair.
I hope that this is just freak coincidence that both of you had this happen just now, and not a sign that we're all at risk of having the same issue eventually
How long have each of you had your phones?
EDIT: One more question for you guys...whatever is on the display on your screen rotates into landscape before the display shuts off right?
sirphunkee said:
It honestly sounds to me like both of you are dealing with a loose connection between the screen and the motherboard somewhere, either power or video feed, can't say for sure which. Unless you're willing to disassemble your rhodium (which isn't impossible, just complex), it sounds like it's time to send it to a service center (for AT&T) or to HTC, since that would be a warranty repair.
I hope that this is just freak coincidence that both of you had this happen just now, and not a sign that we're all at risk of having the same issue eventually
How long have each of you had your phones?
EDIT: One more question for you guys...whatever is on the display on your screen rotates into landscape before the display shuts off right?
Click to expand...
Click to collapse
i have own the phone for about three weeks...
though. bought it used from a friend who had it for four months.
but my friend bought it used from somebody too...
aka. not sure how long it has been used.
the display is rotated. and stays on as long as the right side is held.
before the 'tilt piece' is revealed. as soon as it is. the screen goes blank.
and i believe it would be the video feed...
i can still type with the keyboard. just can't see what i am typing.
unless i hold the screen from sliding completely out on the right.
and about the warranty...
would i have a warranty with htc still?
don't have proof of purchase.
just the phone and original box.
thanks.
My AT&T Tilt 2 has been exhibiting this behavior for some weeks now. It seems to be centered around the keyboard slide, but the behavior comes and goes. I found that slamming the phone on the desktop would bring it back to life for a little while, but then it would start to clap out again in a few days. What a pile.
Anyway, I have a fresh one from AT&T to swap out. Now all I have to do is get all my applications and stuff transferred over to the new phone before sending the craprod back to them.
sh4d0w86 said:
i have own the phone for about three weeks...
though. bought it used from a friend who had it for four months.
but my friend bought it used from somebody too...
aka. not sure how long it has been used.
and about the warranty...
would i have a warranty with htc still?
don't have proof of purchase.
just the phone and original box.
thanks.
Click to expand...
Click to collapse
Oh boy...yeah I didn't realize you'd gotten it third-hand. Well it has been less than a year since the Rhodium was released, so it's possible that HTC will still honor the 1-year manufacturer's warranty, but I can't guarantee it. My suggestion would be to just contact HTC America's service group (1-888-617-1113) and see what they say.
Best case: they agree to cover the repair
Worst case: an example of one of the risks you take when you buy something through "unofficial" channels
Yea luckily for me, I bought it second hand, but it was purchased from a retail store, meaning I got a warranty exchange. I just sent it back.
having same issue
im having same issue, when the phone is slid open, goes black, nothing gets it back on, the buttons light up, display dead
however, if i place it in stand by via power button in regular mode, then slide it open, it works, ive rattled and shook the phone, never goes back off, im typing this with it open and tilted....
any ideas?
prob leaving the htc community, samsung captivate, blackberry torch, or htc aria are my choices from at

[Q] Evo 4 days old, screen having physical issues already.. Help

I just bought my phone 4 days ago, and I'm having issues with the screen responsiveness. It just freezes up at times, sometimes it thinks one finger is touching it and does the whole zoom in/out thing when I touch it, randomly issues commands, touch buttons at the bottom don't respond, and only way it works for a lil again is to touch the power button to turn the screen off and back on. I have a link attached which shows the main problem area is when a lil pressure is put near the bottom, everything starts getting glitchy. It does this with all 3 ROMs I've used, which is another thing, I have to un root it so I can bring it to the sprint store. Since it's a brand new phone, and only 4 days old so far, do you think they will just replace it with another new model, or a refurb? I'd be extremely mad if it's a refurb since it's still in the 30 days. They also added TEP to my plan which I havent taken off yet. But since this is a hardware issue..
http://www.youtube.com/watch?v=I7-sNFfQhMY
The video doesn't even begin to show all the problems, but that's one I can replicate pretty well by holding it at the bottom.
Sometimes you get a bad phone HTC isn't perfect since you are within 30 sprint will switch it for a new one no charge.
Just go get a replacement
like others have said get a replacement simple and easy
CheesyNutz said:
like others have said get a replacement simple and easy
Click to expand...
Click to collapse
Eh, I'm on my third replacement, and gettng the last wasn't exactly "simple and easy ". Oh, and guess what needs to get replaced again due to another faulty display (interestingly this is the first phone I'm returning for the display... unless you count screen separation)?
Order a replacement, and when you get it, don't walk out of the store until you're sure the phone is working as it should.
Make sure they are not going to place an upgrade 20.00 fee on your bill.I had a bad screen as far as lifting up out of the frame from the bottom and light leaking out.When I went online a few days later to view my bill there was a upgrade fee and I had to call them but it was painless just had to give up about 5 minutes to get it done.
Just FYI
I'm really hoping when I go in tomorrow, they can return my phone and get a NEW one on the spot. I dont want them telling me they have to order it, etc, because I know they have a lot in stock. Do I just tell them I want a replacement because my screen is messing up when touching the rim of the screen? I really hope I dont get hassled. The phone is back to stock, S-ON, fully unrooted.
This video shows the issue even more. It's so bad today, I can barely use the phone
http://www.youtube.com/watch?v=qW5f1nHUmwY
I got my replacement today, brand new, hardware 0004. My first one was 0003. I am slightly disappointed because I can tell I have the "bad" screen version. It has a much more yellow tint to it than my first one. My rebate is also going to be declined now unfortunately, and it's going to be a hassle I can already tell.
Edit: I thought I have the worse screen, but it looks a lot better than the youtube comparison video I have seen. It also fades the different brightness settings rather than a solid quick change using power control. It still is a tad more yellow I think. I hope I can root this one just as easy as my last one.

[Q] Bad proximity sensor?

I've noticed from day one that sometimes the proximity sensor seems to be a bit goofy on my phone. Sometimes the screen would go blank immediately after starting a call, and nothing I could do could bring it back except for putting it back up to my face and pulling it away again.
Welp, now the sensor seems to be totally dead unless I smack the phone with my hand. It makes calls, but the display goes blank and no buttons will work at all until the other person hangs up (doesn't matter if it's incoming or outgoing). I've only had the phone for a week. If I have it away from my face and smack the front of the phone with the palm of my hand the display comes back on and all buttons start working again for a few seconds, then it'll go blank again.
I've reverted it back to the stock DI18 that it came with and formatted the SD card (along with wiping everything more times than I can count). Anything else I should try before I take it back to Sprint tomorrow?
lifeofbean said:
I've noticed from day one that sometimes the proximity sensor seems to be a bit goofy on my phone. Sometimes the screen would go blank immediately after starting a call, and nothing I could do could bring it back except for putting it back up to my face and pulling it away again.
Welp, now the sensor seems to be totally dead unless I smack the phone with my hand. It makes calls, but the display goes blank and no buttons will work at all until the other person hangs up (doesn't matter if it's incoming or outgoing). I've only had the phone for a week. If I have it away from my face and smack the front of the phone with the palm of my hand the display comes back on and all buttons start working again for a few seconds, then it'll go blank again.
I've reverted it back to the stock DI18 that it came with and formatted the SD card (along with wiping everything more times than I can count). Anything else I should try before I take it back to Sprint tomorrow?
Click to expand...
Click to collapse
Mine is doing the same.... even worse actually. If the other side doesn't hang up (after taking call and it going blank)..... I have to do a battery pull to fix the issue until the next call. Other times (smaller percentage)... the screen won't turn off at all while talking on it. Either way is unacceptable. I don't know what is causing it... I tried to do a complete wipe and have stock rom.... but it didn't fix the problem. This only starting happening a few weeks ago. I took it into a sprint store and they ordered me a new phone (out of stock). It's still under warrantly... so all is good I hope. I plan on dumping Samsung once a better Gingerbread HTC phone comes out early next year. Samsung support sucks!
Mine goes blank on every single call - only way to get the phone to respond is by removing the battery or smacking the **** out of the front of it with my hand (at which point it brings up the normal in-call screen). Really annoying especially since I just got it on Tuesday.
Hopefully the store near me has some of them in stock. It's also a service center, and a fairly large corporate owned store, so I'm pretty sure I'll be able to swap it tomorrow.
So, the screen stays black until the call is ended right? Well, I have a solution for ending the call if the otherside doesnt hang up anyway, if your running 2.2...
You can set the power key to end calls, that way you can easily disconnect the call without having to have the screen on. I know this isnt a solution, but it may work as a stop gap until you can get it working correctly.
Menu->Settings->Accessibility-> (If a box pops up saying 'No accessibility applications found', just hit cancel) -> Check the box next to 'The power key ends calls'
If your not running 2.2, you can do this by editing one of the key map files, just follow the how to in this thread: http://forum.xda-developers.com/showthread.php?t=849075
That is an option, but it'd be a lot nicer if the phone actually worked the way it's supposed to.
Turns out the corporate owned stores are open late during the holidays, I swung by a little while ago and they confirmed the sensor was borked. Swapped it out on the spot.
Thanks though.
lifeofbean said:
That is an option, but it'd be a lot nicer if the phone actually worked the way it's supposed to.
Turns out the corporate owned stores are open late during the holidays, I swung by a little while ago and they confirmed the sensor was borked. Swapped it out on the spot.
Thanks though.
Click to expand...
Click to collapse
same here... they were out of stock though...and ordered me one. I wonder what caused the sensor to be broken?
this is not a sensor problem, i have this problem and only had it after having the "leaked" 2.2 froyo build, and flashing back to eclair.
this problem didnt happen on 2.2, but now it happens to me on 2.1
Same thing, when i make a call, screen is dead, the only way to get it back is to have the other person hang up.
I have the same issue. I make a call, put the phone to my ear and the screen goes blank. Say I'm calling my credit card company and need to enter in my credit card number via the keypad to continue, I take the phone from my ear back to horizontal in front of me and the screen won't turn on. I can press all buttons, open and shut the keyboard but nothing gets the screen to turn back on until the phone call is disconnected, or I pull the battery.
I don't have insurance through Sprint or Best Buy. I got the phone the first day it was available last fall. I flashed back to stock and still had the issue, the most I ever did was root and clockworkmod. What should I do? Do I have a manufactures warrenty? What kind of process is that, will I be stuck with a POS phone for a month like I was with my Touch Pro back when I had Best Buy replace that...
bmasephol said:
I don't have insurance through Sprint or Best Buy. I got the phone the first day it was available last fall. I flashed back to stock and still had the issue, the most I ever did was root and clockworkmod. What should I do? Do I have a manufactures warrenty? What kind of process is that, will I be stuck with a POS phone for a month like I was with my Touch Pro back when I had Best Buy replace that...
Click to expand...
Click to collapse
I think this would fall under the "manufactures warrenty" since you might have a possible hardware failure already within a year. I would call and ask to find out.
While I'm waiting to stop at the Sprint store after work I downloaded a few sensor test programs from the market. The ones that support the proximity sensor never give me a value when doing the tests. They usually just sit there in a status of "Waiting for sensor". Does anyone know how Sprint can test the sensor or will they just do what I've done?
bmasephol said:
While I'm waiting to stop at the Sprint store after work I downloaded a few sensor test programs from the market. The ones that support the proximity sensor never give me a value when doing the tests. They usually just sit there in a status of "Waiting for sensor". Does anyone know how Sprint can test the sensor or will they just do what I've done?
Click to expand...
Click to collapse
I know there are phone codes that will put you in the test hardware mode, I did this a while back when I got the epic. If I can remember as you come closer to the phone with the hand or whatever you use either the screen would turn off or it would vibrate maybe it did both like I said I can't remember.
I did some homework for you via Google of course, I tried it out and it worked, a screen will popup when you enter the codes pick sensors...just cover up the prox sensor and the value will change from 0 to a 1 and vibrate.
*#0*# - LCD TEST
red/green/blue/melody/vibration/dimming/megacam/Sensor/touch/sleepmode/LED/RECEIVER
Very useful tests for the LCD
I didn't know they had a hardware diagnostics built in. Thanks for the info. Looks like my proximity sensor doesn't change from 1.0 when I cover up the phone. I had a friend do similiar tests with his EVO and it switch from 1.0 to 0.0 when you got your finger about 0.25 inches away from the sensor. Thanks again.
Just to follow up, I took the phone to my local sprint store, which now is a repair center, and they took a look at it and said that they could fix it for $35. I don't have TEP on it so that is why I paid $35. I picked it up today and they put a new screen (top half of the slider) on to fix it and tightened up the looseness of the slider as well. Well worth the $35 in my mind. Although they forgot to put the micro usb cover back on so I have to stop back and see if that is laying around on the work bench.

Screen died?

Last night I was out and during the night I pulled my desire z out of my pocket to find that the screen was dead, the soft touch buttons were still lit up and working but no display. I pulled the battery and tried to reboot and no luck, you can hear it booting and even unlock/receive calls and txts etc once it has booted up just the screen stays blank the whole time so have to do everything on feel.
Essentially does this just mean my screen has a hardware fault? is it worth trying to fix? I assume the only option would be to purchase a replacement screen and dissemble and reassemble it?
(warranty is not worth it as I live in New Zealand and would have to send my phone back to the UK where I bought it from, also I have dropped it quite a few times so probably voided anyway...)
Thanks in advance for any input
Does it never display anything? So not even a flash during boot or something?
Because then it is probably a hardware problem.
Since the soft touch buttons do still work I think there might be a little crack or something in the flat cable that connects the bottom half with the top.
Maybe you could check whether you can see if the cable is broken or not?
The best thing to do then is to look for a replacement and try to fix it yourself or bring it to a shop where they can do it for you.
No it never displays anything, completely dead the whole time. The touch input is still working though as I answered a phone call this morning on it by making the usual gesture just without being able to see anything. Doesnt seem to be anything wrong with the cable itself as far as I can see. Yea might have to get someone to have a look at it.
My phone is acting the same. I dropped my phone in the pond before, but pulled battery out on time and had it in rice for a day. My phone was still working for about two weeks after that incident. I dropped it and had one little crack at the top of the screen and about a week after that it died when I had a water balloon fight with the phone in my pocket. D;
Do any of you know if the replacement lcd screen/digitizer for the Desire Z would work for the G2?
I had the same thing happening to my G2 screen, only it was intermittently working for a little while, then just completely died and wouldn't work. It was doing this crazy flickering thing then the back light wouldn't go on at all. If I held the phone at a certain angle in the sun, I could see that the pixels were indeed working on the display, but there was no backlight to make them normally visible.
So I purchased a replacement screen from ebay and carefully followed the directions on a youtube video for a G2 take apart. Its not a hard task to take apart and get down to the screen itself. It was rather easy. After putting it back together the screen still didn't work! Sounds work, i can also receive calls etc. But the screen still doesn't work!
Is there any way that this could be a software issue?
Oh and PS, I believe the LCD replacement would work for both the desire Z and the G2. They are identical phones after all right? I'd say its a safe bet. The screen I bought was only 35 bucks. Didn't think that was a bad deal.
Another dead screen or something else?
Few days ago my phone fell of the couch onto a rug - no big deal, so far it has survived much worse, but when I picked it up, the colors were all messed up - overly green and red. Tried restarting - no luck. Everything worked fine, except the colors, but then the screen turned of completely. I could hear notifications, phonecalls, but the screen was dead. After some tapping on the screen, it turned on again - with ****ed up colors. Then started flickering and was gone again. Few more times I could turn it on by tapping before it was dead for good.
Figured, after all these drops it survived, maybe the screen connector is a bit loose. I mean, I could sometime get a contact when tapping it, so I dissasambled it completely, secured all the connection, put it all back tougether and fired up - same thing: dead screen, phone working.
Has anyone had such problem before? Is it screen that is dead, or connector or... I have no clue... I would like try to fix it on my own, with some replacement parts I could get on ebay - but, what gave?

Weird touch screen.

Its been some days, I'm experiencing this weird touch screen problem.
My DZ touch screen doesn't respond properly.
For example:
If i see an image and slide just one finger up and down then it would zoom in and out. And then the whole screen becomes unresponsive.
It seems as if, its touched by itself. Even the softkeys would go numb. Only the haptic feedback of my search button works at that moment.
But the trackpad works perfectly.
But, If i lock and unlock the screen using power buttons, it would work properly for some few moment and then again the problem repeats.
At present I'm repeating this process of locking and unlocking screen to use my phone.
One even worst weird thing is that, if the device is connected to a charger and kept on the table or floor. This problem doesn't occur.
I have done system format, restored my nandroids and even changed Roms. The problem still exists.
Please note, i don't use any Casing or covers that would press the device hard for malfunctioning of screen. I have even removed and replaced my screen guard.
I'm sure, its not a software issue.
And even i dont think its a strip issue, because i dont use my physical keyboard always.
Can anyone say what hardware issue it might be..?
Or what i need to do? I'm really out of options.
Do i have to replace my whole screen or the digitizer..?
Thanks...
Thats no fun,
As you stated it's more than likely a hardware fault, the two most likely culprits would be the digitizer or the main flex cable
Which would be this and this
both relatively easy to replace depending on your experience
in 4.x and up ROMs check the developers setting to show touch or use apps like
z device test
or
yet another multitouch test
these wont help you fix the issue but may show you where the bad points are on the screen
best of luck
I know the problematic spot. Its near Search softkey. Even Yet another multi-touch test would stuck at that spot....
As you can see in the image, that i'm not holding anywhere, still it shows that somewhere around Search softkey its touched by itself.
In second image, If i move my fingers around, it would show the other touch responds, but if i slide near search, it would go and stuck there itself.
So, i guess i would first go with the flex cable.
In actuality I'm leaning toward the digitizer in your case, but its possible to be either.
And if you have a spare phone it may be worth disassembling even without buying anything. On a G1 I once fixed a similar issue just taking out the digitizer and cleaning the contacts on the ribbon and the edges of it as well, when I put it back it worked like new. I think some dust may have gotten into the edges but it may be worth a shot before buying anything... But could make matters worse so if you don't have a spare, buy parts first
Best of luck
Sent from my Nexus 7 using XDA Premium 4 mobile app
I guess i should try disassembling and clean it first. If it still persists then i would go for digitizer.
And thanks for giving a hope.
Thanks...

Categories

Resources