Develop Bugs

[Q] LCD Screen Problems

Ok so I bought the wife a new G2 about a month ago from T-Mobile. The phone is great and we have both been loving it. Earlier this week the wife mentioned that she was unable to use her phone a couple times because she couldn't get the screen to come up. I messed around with it for a while and eventually it started acting up again. While using the phone, the screen would start to flicker (go between the expected image and a black screen), almost as if the backlight was going out (yes I know there is no backlight with OLED), and then the screen went blank. The screen was black for almost half an hour. I tried pulling the battery and rebooting, the screen never came on and the phone booted up completely. Since it was still useless I went ahead and pulled the battery again. I let it sit for 3-5 minutes and powered it back up. The screen came on, started to flicker a bit and then went black (this is at the HTC boot screen). Eventually the phone came back and now it hasn't exhibited the problem in a couple days. I have noticed that this doesn't seem to be a problem with the Z-hinge (seemed like a likely cause at first), as playing with the hinge doesn't seem to make it flicker or reduce the flicker when its happening. At this point I am 90% confident this is a hardware issue unrelated to the z-hinge. Perhaps a faulty LCD driver chip or a improperly seated ribbon cable on the motherboard side. Feel free to offer any other suggestions.
so... the phone has been rooted and has Cyangenmod installed. In order to get a warranty claim on this I will need to flash the phone back to the original TMO rom. This should be as simple as just flashing the stock .nbh file through the boot loader right? I need to do this before the screen permanently dies on me and I have an expensive paperweight. My other question is if anyone knows whether T-Mobile will send me a new phone replacement for this? I'm under the impression that when you do a warranty exchange you are sent a refurbished model that has been repaired. The phone is only 1 month old and I don't want a refurbished 6 month old phone to replace it, although I don't know if I really have many options.

Okay what method of prem root and s-off did you do? Because if u used the 1st method of prem rooting and s-off useing unforgivens way you need to hex edit to properly flash the PC10IMG.zip stock rom or u will get simi bricked phone. Am not familer with rage so I can't really explain that. As for gfree method you should be fine flashing the orginal stock rom but have more procedure to turn on S-on
Sent from my HTC Vision using XDA App

I used the gfree method described here http://forum.xda-developers.com/wiki/index.php?title=HTC_Vision#Rooting_the_G2 using the full method that does the radio S-OFF, Super-CID and simunlock.
Hopefully I can just do something like what they discuss here: http://www.addictivetips.com/mobile/how-to-unroot-t-mobile-g2-htc-desire-z-complete-guide/
Thanks

I advice following this
http://forum.xda-developers.com/showthread.php?t=835971
It worked for me. Well hope everything works out
Sent from my HTC Vision using XDA App

The backlight may very well be faulty. This is not an OLED screen. Its just a standard LCD display.
I would get it exchanged if I were you.
Sent from my T-Mobile G2 running Cyanogenmod.

Just got the new G2 in the mail, rooting it now. I was under the impression that the H2o had an amoled display and not a standard backlit lcd. Is this incorrect?
Sent from my HTC HD2 using XDA App

No the g2 has a normal lcd
Sent from my HTC Vision using XDA App

The G2 has an S-LCD. An better LCD screen developed by Sony.
HTC started to use S-LCD because samsung couldn't make enough AMOLED screens for HTC's Desire phones.

[Q] My HTC Touch Pro 2 Screen Suddenly Stopped Working!

So today my touch screen on my HTC Touch Pro 2 just stopped working. It doesn't respond to any touches on it at all. I can use the hardware buttons and the keyboard, but nothing on the touch screen which makes the phone practically useless.
Does anyone know of any settings that may have caused this? I'm hoping I might've mistakenly turned something off that made the entire touch screen shutdown. Doubtful, but worth a shot.

If you aren't already, you should flash a stock ROM to make sure it is the hardware at fault. If it acts this way with a stock ROM, then you have a faulty digitizer. You could either try to replace it yourself, or send it in for repairs or a replacement if you still have warranty remaining.

I am already using the stock ROM
Is that happened due to error on D3D driver?

waeljimmy said:
I am already using the stock ROM
Is that happened due to error on D3D driver?
Click to expand...
Click to collapse
No, it's happening because of a faulty digitizer as I mentioned above. That needs to be replaced.

Try a hard reset first, it happened to me once.
Sent from my TMOUS TP2 using xda app

Thanks "cajunflavoredbob"
Although my phone is out of warranty they replaced it to me
I think this will never happened again
so that what makes me want to ask you what is the " faulty digitizer " ???
and how it occurs??
sorry for annoying

Touch Screen Problem on HTC Desire Z

Hi All
For the last couple of months my desire has had an intermittent problem with the touch screen. All of a sudden it decides you're trying to pull down the "notifications" screen when you're just touching the touch screen, sometimes it also decides you're trying to hold and drag when you're just tapping the screen, sometimes it simply stops responding. These problems are usually solved by tapping the top button and putting the phone on standby then tapping it again and waking it up - although sometimes it then won't let you drag down the screen unlock until you repeat the on/off standby procedure a couple of times. The problem varies on connecting my phone to my computer.
Given that in between these instances the touch screen works as normal I'm guessing it shouldn't be a hardware issue, but the intervals between these problems appear to be getting shorter (either that or I'm just getting more annoyed by it recently). I've had a quick search of the forums and haven't immediately found anyone having this precise problem. Is it likely a question of trying factory reset and if that fails sending it for repair?
Thanks in advance

Similar issues. Don't think this is hardware.
Sent from my HTC Vision using xda premium

Gotta know more about the phone first. Is there a custom rom? Have you tried flashing to stock?

Dukenukemx said:
Gotta know more about the phone first. Is there a custom rom? Have you tried flashing to stock?
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Click to collapse
I'm having same problem, mine started couple weeks after I installed cm7.2, I tried another rom, no luck

Its definitely not software. I've tried froyo, gb stock with s-on and no root. I've been on ics roms cm7 roms but this problem occurs on all. I'm giving mine for service today.
Sent from my HTC Vision using xda premium

Well since the OP didn't respond here's my suggestions. If you think it's software then just flash to a stock rom. You should find a number of them lying around the forums, and instructions on how to flash. This will mean your phone is unrooted and will need to be rooted, as well as taking care of installing a recovery and etc. This should correct anything wrong with the software.
Otherwise you busted the digitizer, which is actually very cheap to buy on Ebay. You will have to take the phone apart which can be time consuming.

strawmetal said:
Its definitely not software. I've tried froyo, gb stock with s-on and no root. I've been on ics roms cm7 roms but this problem occurs on all. I'm giving mine for service today.
Sent from my HTC Vision using xda premium
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Click to collapse
Hello,
Any luck with the Tocuh Input, is your phone back from service? I am also facing the same issue....

I had this problem on my G2 a while back. It was a hardware problem so I ordered a new touchscreen and replaced it myself.
Sent from my Nexus 7 using xda app-developers app

htc desire z touchscreen details
Whiskey_Tango said:
I had this problem on my G2 a while back. It was a hardware problem so I ordered a new touchscreen and replaced it myself.
Sent from my Nexus 7 using xda app-developers app
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Hello Whiskey_Tango / Others,
Can you please let me know the details of the touchscreen component that you ordered for your G2? My HTC desire Z touch screen has also gone bad (unresponsive at multiple points) and I feel that changing the hardwre should do the trick.
If possible, let me know the touchscreen specs (model / part number) as well as any online website from where I can order it !
Many Thanks !!

From eBay search for HTC g2 digitizer
Be careful to get the one for the vision not for the magic
should be about $20
Sent from my Nexus 7 using xda premium

demkantor said:
From eBay search for HTC g2 digitizer
Be careful to get the one for the vision not for the magic
should be about $20
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Thanks for the quick response. Before coming here, I had a mobile service shop take a look at my handset and he had mentioned that for HTC desire z, the "touch screen" comes with the "display" attached to it. Did he meant the digitizer only or (digitzer + LCD screen) or he was simply trying to rip me off ?
I am very sure that there is nothing wrong with the display on my handset, its only the touch functionality that is not working properly.
Which one of the following do I need to search on EBay?
gultek.eu/htc-spare-parts/digitizer-touchpad/desire-z.html
or gultek.eu/genuine-parts/lcd-modules/htc/desire-z-hd3.html
or both?
Thanks again in advance !!

You need just the digitizer, if you're doing it yourself it takes about an hour if you've never done it before, don't buy the lcd if you don't see a flaw in it.
Some people sell the whole front chasis with lcd, digitizer, front bezel all connected for ease of replacement. May be easier but you will only shave of 30min tops and spend 3x as much
Sent from my HTC Vision using Tapatalk 2

yeah this happens to my G2 a lot. I got my phone fixed a while back (2-3 months ago) becuase the colors on my screen were screwed up and the ear piece was broken. i took it in and he replaced a couple of cables. it worked fine but now sometimes the screen is just having a straight up seizure. it flips through pages so fast and it goes from page 1-2 and back and forth and then the virtual keyboard presses multiple keys and just its crazy. i feel like the guy that fixed my phone didnt plug in a cable all the way. but yeah thats my problem. i dropped my phone the other day and ever since my phone hasn't gone into a seizure lol

Hi, did you solve your problem? I have the same with my desire Z. It click alone in several place on my screen.
And I ask me if the problem don't come from the lcd digitizer control instead of the touch screen digitizer

strawmetal said:
Its definitely not software. I've tried froyo, gb stock with s-on and no root. I've been on ics roms cm7 roms but this problem occurs on all. I'm giving mine for service today.
Sent from my HTC Vision using xda premium
Click to expand...
Click to collapse
Hi, did u fixed your phone? can you tell me what was the problem.. even my phone is acting crazy.. wil that be fixed if i change the screen digitizer?

ahmedrzvi said:
Hi, did u fixed your phone? can you tell me what was the problem.. even my phone is acting crazy.. wil that be fixed if i change the screen digitizer?
Click to expand...
Click to collapse
Yes replacing the digitizer did fix my problem. And a year later the replaced digitizer started giving problems. So I ordered 2 extra digitizers off ebay. Both of them turned out to be duds. Surprisingly the second digitizer(which I replaced a year ago) fixed itself.

I think Im having the same problem,
bottom part of screen (including the home, menu, back, search buttons) aren't functioning half the time,
is there any service manual, or link to information as to what I need to tear apart on my DZ?
should this be enough? EBAYLINK
what do I need to replace the digitizer?

Digitiser non-reponsive, need to root.

Okay, I haven't actually used this phone in ages, over a year, but a friend of mine is long-suffering with a BlackBerry and I feel obliged to end her suffering. There are two problems:
1) She wants Sense 4.0.
2) The digitiser is smashed and non-responsive. (A replacement has been ordered)
Now, I am sure that there is a few Sense 4.0 ROMs lying around here due to the fact that HTC released the Desire C, which has the same resolution screen.
So, I started to go through the process of unlocking bootloader, flashing recovery etc and fell at the first hurdle. When I had this, I didn't even look at the developer options, which seems to have screwed me over, because USB bugging is disabled.
So, basically, does anybody know how to enable USB debugging without actually using the screen? Or anything that could enable me to get all of this done now, so I can just replace the screen when I get it and give her the phone?

Nope. Gotta have the screen! And there's not a single sense 4 rom and there never will be. Desire C is armv7 the WFS is only armv6; it's not a case of screen size, but processor compatibility
Sent from my Wildfire S A510e using xda app-developers app

Ouch.
Indeed, you're going to have to fix the screen first.

I faced a similar problem some time ago. Unfortunately, the digitizer has to be fixed first

Alrighty then. I've seen many reviews saying the far right side of the screen often does not respond on replacement, is this true? I was looking at one on Amazon, although the seller is "HTC" I don't buy that for a second.
Sent from my HTC One S using xda premium

I'm very curious on how you proceed on this. I got the same phone and exchanged a non-responsive (shattered) digitizer to a new one which also seems like it is totally unresponsive.
I have read that you need to go into diag mode and calibrate the phone after exchanging digitizer, which seems impossible without USB debugging is set to ON. Unfortunately mine is set to OFF and I'm stuck with an unresponsive digitizer...
Did you get it to work?

[Q] TWRP and Replacement lcd/digitizer

Has anyone here broke their screen and replaced it. I have replaced a few screens now on the Verizon M7 and have found that you need the right lcd/digitizer installed for twrp to work. I first thought is was the red shell I was converting to, Until I dropped it and broke the screen and replaced then twrp worked again. I started having issuses with my screen and had it replaced under warranty. I installed the replacement screen today and again like 2 screens ago twrp will not load.
So, if anyone breaks their screen, be advised some of the replacement screens out their do not get along with twrp or cwm for that matter. I guess, try to make sure you getting genuine htc replacement parts when ordering a new screen.
I was excited to install a brand new lcd/digitizer and then I saw the new rom with sense 7.0 and I went to load twrp and not loading. Has anyone else out there replaced the screen and twrp stopped loading? I mean what good is having a s-off rooted phone the will not boot into recovery.
I don't think I can rma the screen over twrp not loading.....................

I haven't had issues with TWRP, but I have replaced 3 screens on Verizon M7s & M8s and non have worked, yet the original cracked screens work fine. I'm wondering if there are model/carrier specific screens that need to be used?